I'll say this much; even with the warranty concerns, I'd use Amsoil 5w30 over Mobil 1 5w30 without blinking an eye.
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Warranty questions
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Originally Posted By: Drew99GT
I'll say this much; even with the warranty concerns, I'd use Amsoil 5w30 over Mobil 1 5w30 without blinking an eye.
I'll be running Amsoil this spring, w/o hesitation.
Frank D
I'll say this much; even with the warranty concerns, I'd use Amsoil 5w30 over Mobil 1 5w30 without blinking an eye.
I'll be running Amsoil this spring, w/o hesitation.
Frank D
I would use Pennzoil Platinum 5w30 with full confidence.
IMHO, the GM OLM is a joke, and i would never run a conventional oil strictly going off the OLM. Some would i'm sure, but not I.
The oil light in our 08 Savanna is at 25% and 7500 miles on Amsoil synthetic & EAO filter. I would NEVER run a conventional oil for that long, period.
I would advise you to run a synthetic like PP, Mobil 1, or whatever else you choose if you're not going with the XL. The XL however, IS good for 7500 miles or 6 months. I don't know about the PP or Mobil 1.
The oil light in our 08 Savanna is at 25% and 7500 miles on Amsoil synthetic & EAO filter. I would NEVER run a conventional oil for that long, period.
I would advise you to run a synthetic like PP, Mobil 1, or whatever else you choose if you're not going with the XL. The XL however, IS good for 7500 miles or 6 months. I don't know about the PP or Mobil 1.
The GM OLM works. It is calibrated based on the ZDDP decay of a typical conventional oil in that particular engine - with some wiggle room to spare.
I have not heard of any cases of engine failure or complications from someone using the OLM.
I have not heard of any cases of engine failure or complications from someone using the OLM.
Originally Posted By: AlanRebod
The GM OLM works. It is calibrated based on the ZDDP decay of a typical conventional oil in that particular engine - with some wiggle room to spare.
I have not heard of any cases of engine failure or complications from someone using the OLM.
Maybe so, but to each his own. 1yr./7-8000 miles IMO is way too long on conventional. Especially in a new motor. But, i don't go looking for UOA using conventional on this site either.
Do you really have ANY wiggle room here with conventional?
The GM OLM works. It is calibrated based on the ZDDP decay of a typical conventional oil in that particular engine - with some wiggle room to spare.
I have not heard of any cases of engine failure or complications from someone using the OLM.
Maybe so, but to each his own. 1yr./7-8000 miles IMO is way too long on conventional. Especially in a new motor. But, i don't go looking for UOA using conventional on this site either.
Do you really have ANY wiggle room here with conventional?
Originally Posted By: Pablo
Originally Posted By: Drew99GT
Originally Posted By: XS650
You're the one selling a product and making a claim. It's time for you to back it up with information from the people responsible for the car manufacturers warranty.
Exactly!
We already have evidence here that going beyond the owner's manual and having an engine failure resulted in a customer having to pay for a new engine.
Pablo, you're doing your clients a disservice and essentially giving them bad legal advice buy stating they can use an oil not approved in an owner's manual (a written legal contract) and running it at intervals beyond what the OM states.
I know your selling the product and all, but at least have enough common sense to see your logic is flawed in the real world.
So now you're telling us that if someone runs Amsoil for 1 year or 25K and has an engine failure under warranty, that the OEM must test the oil and prove it would in fact meet API specifications? Are you serious? If you told a regional rep for an OEM that, he'd probably fall on the floor laughing in hysteria!
My logic is not flawed, you guys are not looking at this with a real world open mind. You are only seeing it how you seem to think the world operates via some kind of BITOG back slapping logic.
I never said that last bit, please stop putting words in my mouth. But if the differential or air conditioner failed in that case, you guys are saying the dealer/manufacturer wouldn't have to honor the warranty because the owner did extended oil change intervals. Not logical. Not legal.
This is NOT only my personal stance, it's Amsoil's stance.
https://www.amsoil.com/dealer/magnuson_moss.aspx
So Amsoil, as solid company, with 30+ years of zero debt, good reputation, positive dealings and cash flow would stake their business of some shaky legal foundation? Then we have feeble failing auto manufacturers who simply can't seem to make a hard stance on what oil to use. I'm doing no one a disservice and I'm not giving ANY legal advice.
WHOA there Sea Biscuit. Don't go putting words into our mouths now. NO ONE has said the mfg would void the AC warranty or the Differential warranty for doing extended OCI's. COME ON DUDE are you serious? We are talking engine warranty here - period. Wow are you grasping at straws now to try and salvage something from this.
Originally Posted By: Drew99GT
Originally Posted By: XS650
You're the one selling a product and making a claim. It's time for you to back it up with information from the people responsible for the car manufacturers warranty.
Exactly!
We already have evidence here that going beyond the owner's manual and having an engine failure resulted in a customer having to pay for a new engine.
Pablo, you're doing your clients a disservice and essentially giving them bad legal advice buy stating they can use an oil not approved in an owner's manual (a written legal contract) and running it at intervals beyond what the OM states.
I know your selling the product and all, but at least have enough common sense to see your logic is flawed in the real world.
So now you're telling us that if someone runs Amsoil for 1 year or 25K and has an engine failure under warranty, that the OEM must test the oil and prove it would in fact meet API specifications? Are you serious? If you told a regional rep for an OEM that, he'd probably fall on the floor laughing in hysteria!
My logic is not flawed, you guys are not looking at this with a real world open mind. You are only seeing it how you seem to think the world operates via some kind of BITOG back slapping logic.
I never said that last bit, please stop putting words in my mouth. But if the differential or air conditioner failed in that case, you guys are saying the dealer/manufacturer wouldn't have to honor the warranty because the owner did extended oil change intervals. Not logical. Not legal.
This is NOT only my personal stance, it's Amsoil's stance.
https://www.amsoil.com/dealer/magnuson_moss.aspx
So Amsoil, as solid company, with 30+ years of zero debt, good reputation, positive dealings and cash flow would stake their business of some shaky legal foundation? Then we have feeble failing auto manufacturers who simply can't seem to make a hard stance on what oil to use. I'm doing no one a disservice and I'm not giving ANY legal advice.
WHOA there Sea Biscuit. Don't go putting words into our mouths now. NO ONE has said the mfg would void the AC warranty or the Differential warranty for doing extended OCI's. COME ON DUDE are you serious? We are talking engine warranty here - period. Wow are you grasping at straws now to try and salvage something from this.
Originally Posted By: NHHEMI
WHOA there Sea Biscuit. Don't go putting words into our mouths now. NO ONE has said the mfg would void the AC warranty or the Differential warranty for doing extended OCI's. COME ON DUDE are you serious? We are talking engine warranty here - period. Wow are you grasping at straws now to try and salvage something from this.
Of course I was not 100% serious, I was using that as an example of some here putting words in my mouth! I'm not trying to "salvage" anything. If you want to call the Amsoil position "grasping at straws" that's your right.
WHOA there Sea Biscuit. Don't go putting words into our mouths now. NO ONE has said the mfg would void the AC warranty or the Differential warranty for doing extended OCI's. COME ON DUDE are you serious? We are talking engine warranty here - period. Wow are you grasping at straws now to try and salvage something from this.
Of course I was not 100% serious, I was using that as an example of some here putting words in my mouth! I'm not trying to "salvage" anything. If you want to call the Amsoil position "grasping at straws" that's your right.
Originally Posted By: Tucson Five-O
But guys, help me decide --conventional or synthetic in my Impala? If I run dino down to sludging problems in an otherwise healthy engine? I'd like to think GM's OLM calibration takes everything into account as long as you use an oil at least as good as their SM GF-4 Mobil Drive Clean (Mr. Goodwrench) reference oil.
Otherwise, if I can't be sure, then Pennzoil Platinum 5w30 it is.
Then we can all stay friends and agree to disagree on this sticky issue.
After all, we have the Valvoline/Mobil1 debacle to hash out and the conventional/synthetic debate to resolve, and the ....
Take care everyone & Merry Christmas to all!
Gary
Really it is up to you and what you wish to spend. You will be fine going by the OLM and using a good quality 5w30 conventional oil. If you want some added protection then step up to a good synthetic. Plenty of options out there for you in the synthetic oils that are affordable and meet warranty spec's. You could even run a blend and split the difference.
Actually, these days conventional oil is getting to be really expensive. Not the big price gap between conventional and synthetic that there used to be. IMO for the little extra it costs to step up to synthetic it doesn't make sense not to.
Bottom line most any oil that meets warranty spec's, regardless of conventional/blend/synthetic, available to you will be a safe one to use. It comes down to your pocket and if you want to run good enough, better, or the best.
But guys, help me decide --conventional or synthetic in my Impala? If I run dino down to sludging problems in an otherwise healthy engine? I'd like to think GM's OLM calibration takes everything into account as long as you use an oil at least as good as their SM GF-4 Mobil Drive Clean (Mr. Goodwrench) reference oil.
Otherwise, if I can't be sure, then Pennzoil Platinum 5w30 it is.
Then we can all stay friends and agree to disagree on this sticky issue.
After all, we have the Valvoline/Mobil1 debacle to hash out and the conventional/synthetic debate to resolve, and the ....
Take care everyone & Merry Christmas to all!
Gary
Really it is up to you and what you wish to spend. You will be fine going by the OLM and using a good quality 5w30 conventional oil. If you want some added protection then step up to a good synthetic. Plenty of options out there for you in the synthetic oils that are affordable and meet warranty spec's. You could even run a blend and split the difference.
Actually, these days conventional oil is getting to be really expensive. Not the big price gap between conventional and synthetic that there used to be. IMO for the little extra it costs to step up to synthetic it doesn't make sense not to.
Bottom line most any oil that meets warranty spec's, regardless of conventional/blend/synthetic, available to you will be a safe one to use. It comes down to your pocket and if you want to run good enough, better, or the best.
Originally Posted By: Pablo
Quote:
You have a little play room as a service writer if you have some common sense. Example would be allowing 75W-90 synthetic gear lube to replace the called for 80W-90 conventional because it is still a 90wt oil and actually is a superior product. As long as it meets all the car mfg's spec's and ratings you are ok. Same would go for letting a customer in a cold climate run 0W instead of 5W as long as all other requirements are met. These massive changes to the car mfg's maintenance requirements that companies like Amsoil advocate and claim are ok however is what gets me fired up. There is SOME leeway but not the grand canyon sized legal loop holes that some companies try and tell customers exist.
The car mfg doesn't have to prove the oil caused the failure IF you used the wrong oil( ie; weight, rating, non API, etc... )or exceeded the allowed mileage limit. THAT right there gives them grounds to do so. IF the car mfg says you need to use API certified 5w30 meeting mfg's spec #XXXX and change it within 6000 miles that is what you need to do while under warranty. It is SO SIMPLE it is not funny. Why some can't grasp that is beyond me? If you choose instead to run some non API certified 10W-40 that does not meet the mfg's spec and you go 12,000-15,000 miles on the OC however YOU just put your warranty at risk. You could probably get away with using 0w30 as said above but it better meet all the spec's called for and you better change it on time. Again, SOME leeway but it isn't to the extent some companies( not just Amsoil )claim.
If it's the incorrect weight, or rating, sure - but I know it's tough - they absolutely cannot deny warranty coverage for an oil that scientifically, legally, physically meets the API/ILSAC test requirements. Here's an easy way to think about it....back in the day, Amsoil used to have all their oils with P in the 1200 range (and we all know the story there). Let's say theoretically you used this old oil and ruin your catalytic converter under warranty. Guess what? Dealer does NOT have to replace the converter, but he can't legally deny warranty on premature failure of the fuel injectors or radiator or whatever. It's that simple.
I never said dealers won't try. But when they do, they lose. Every time. Where is the proof? Well that is the tough nut. Amsoil calls the dealer, dealer stops stalling. How do I prove that? I can't.
On the other hand, no one (again) has proved the dealer has legal right, and can legally void the warranty for using non-API listed oil, in particular and oil exceeding all the sequence test requirements.
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
Quote:
You have a little play room as a service writer if you have some common sense. Example would be allowing 75W-90 synthetic gear lube to replace the called for 80W-90 conventional because it is still a 90wt oil and actually is a superior product. As long as it meets all the car mfg's spec's and ratings you are ok. Same would go for letting a customer in a cold climate run 0W instead of 5W as long as all other requirements are met. These massive changes to the car mfg's maintenance requirements that companies like Amsoil advocate and claim are ok however is what gets me fired up. There is SOME leeway but not the grand canyon sized legal loop holes that some companies try and tell customers exist.
The car mfg doesn't have to prove the oil caused the failure IF you used the wrong oil( ie; weight, rating, non API, etc... )or exceeded the allowed mileage limit. THAT right there gives them grounds to do so. IF the car mfg says you need to use API certified 5w30 meeting mfg's spec #XXXX and change it within 6000 miles that is what you need to do while under warranty. It is SO SIMPLE it is not funny. Why some can't grasp that is beyond me? If you choose instead to run some non API certified 10W-40 that does not meet the mfg's spec and you go 12,000-15,000 miles on the OC however YOU just put your warranty at risk. You could probably get away with using 0w30 as said above but it better meet all the spec's called for and you better change it on time. Again, SOME leeway but it isn't to the extent some companies( not just Amsoil )claim.
If it's the incorrect weight, or rating, sure - but I know it's tough - they absolutely cannot deny warranty coverage for an oil that scientifically, legally, physically meets the API/ILSAC test requirements. Here's an easy way to think about it....back in the day, Amsoil used to have all their oils with P in the 1200 range (and we all know the story there). Let's say theoretically you used this old oil and ruin your catalytic converter under warranty. Guess what? Dealer does NOT have to replace the converter, but he can't legally deny warranty on premature failure of the fuel injectors or radiator or whatever. It's that simple.
I never said dealers won't try. But when they do, they lose. Every time. Where is the proof? Well that is the tough nut. Amsoil calls the dealer, dealer stops stalling. How do I prove that? I can't.
On the other hand, no one (again) has proved the dealer has legal right, and can legally void the warranty for using non-API listed oil, in particular and oil exceeding all the sequence test requirements.
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
Originally Posted By: Big Jim
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
I "get it" just fine. Your words belie that perhaps you don't get it or again someone is putting words in my mouth.
When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure". OF COURSE if the lubricant fails the manufacturer can and will deny a warranty claim. And please tell me exactly what that manufacturer would do if an "API" oil was in the crankcase and the oil failed? (even with receipts and the whole bit)
And again - please tell me that Amsoil is just totally wrong with their (not my) statements. 30+ years in business and they just make up this junk?? Come one, expand and learn.
Thanks - have a great Christmas!
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
I "get it" just fine. Your words belie that perhaps you don't get it or again someone is putting words in my mouth.
When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure". OF COURSE if the lubricant fails the manufacturer can and will deny a warranty claim. And please tell me exactly what that manufacturer would do if an "API" oil was in the crankcase and the oil failed? (even with receipts and the whole bit)
And again - please tell me that Amsoil is just totally wrong with their (not my) statements. 30+ years in business and they just make up this junk?? Come one, expand and learn.
Thanks - have a great Christmas!
Originally Posted By: Pablo
I would use Pennzoil Platinum 5w30 with full confidence.
What
Have you been hitting the bottle again?
I would use Pennzoil Platinum 5w30 with full confidence.
What
Back off on the eggnog.
Originally Posted By: Johnny
Originally Posted By: Pablo
I would use Pennzoil Platinum 5w30 with full confidence.
What
Have you been hitting the bottle again?
Some people just don't get it!!
Originally Posted By: Pablo
I would use Pennzoil Platinum 5w30 with full confidence.
What
Some people just don't get it!!
Originally Posted By: Pablo
Originally Posted By: Big Jim
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
I "get it" just fine. Your words belie that perhaps you don't get it or again someone is putting words in my mouth.
When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure". OF COURSE if the lubricant fails the manufacturer can and will deny a warranty claim. And please tell me exactly what that manufacturer would do if an "API" oil was in the crankcase and the oil failed? (even with receipts and the whole bit)
And again - please tell me that Amsoil is just totally wrong with their (not my) statements. 30+ years in business and they just make up this junk?? Come one, expand and learn.
Thanks - have a great Christmas!
Is this not what you said?
"On the other hand, no one (again) has proved the dealer has legal right, and can legally void the warranty for using non-API listed oil, in particular and oil exceeding all the sequence test requirements. "
Automakers don't "void" warranties, they deny warranty claims. If you have lubrication related engine failure and it appears that your maintenance has been negligent you will be asked for maintenance records. If the records show you have exceeded the oil change interval or have used the incorrect lubricant, your toast. It's that simple. Trying to claim that "it's as good as API certified oil" if it isn't certified just will not cut it. If the records look fraudulent you are also SOL.
Originally Posted By: Big Jim
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
I "get it" just fine. Your words belie that perhaps you don't get it or again someone is putting words in my mouth.
When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure". OF COURSE if the lubricant fails the manufacturer can and will deny a warranty claim. And please tell me exactly what that manufacturer would do if an "API" oil was in the crankcase and the oil failed? (even with receipts and the whole bit)
And again - please tell me that Amsoil is just totally wrong with their (not my) statements. 30+ years in business and they just make up this junk?? Come one, expand and learn.
Thanks - have a great Christmas!
Is this not what you said?
"On the other hand, no one (again) has proved the dealer has legal right, and can legally void the warranty for using non-API listed oil, in particular and oil exceeding all the sequence test requirements. "
Automakers don't "void" warranties, they deny warranty claims. If you have lubrication related engine failure and it appears that your maintenance has been negligent you will be asked for maintenance records. If the records show you have exceeded the oil change interval or have used the incorrect lubricant, your toast. It's that simple. Trying to claim that "it's as good as API certified oil" if it isn't certified just will not cut it. If the records look fraudulent you are also SOL.
Originally Posted By: Big Jim
Originally Posted By: Pablo
Originally Posted By: Big Jim
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
I "get it" just fine. Your words belie that perhaps you don't get it or again someone is putting words in my mouth.
When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure". OF COURSE if the lubricant fails the manufacturer can and will deny a warranty claim. And please tell me exactly what that manufacturer would do if an "API" oil was in the crankcase and the oil failed? (even with receipts and the whole bit)
And again - please tell me that Amsoil is just totally wrong with their (not my) statements. 30+ years in business and they just make up this junk?? Come one, expand and learn.
Thanks - have a great Christmas!
Is this not what you said?
"On the other hand, no one (again) has proved the dealer has legal right, and can legally void the warranty for using non-API listed oil, in particular and oil exceeding all the sequence test requirements. "
Automakers don't "void" warranties, they deny warranty claims. If you have lubrication related engine failure and it appears that your maintenance has been negligent you will be asked for maintenance records. If the records show you have exceeded the oil change interval or have used the incorrect lubricant, your toast. It's that simple. Trying to claim that "it's as good as API certified oil" if it isn't certified just will not cut it. If the records look fraudulent you are also SOL.
That is what I wrote, but again: "When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure".
I'm telling you, I never wrote that, said that, implied that, uttered that or meant that. Those were your words.
In your opinion "your toast" and "just will not cut it". That really means nothing. It's just your opinion! Please, I'm just as tired of this as you guys are. Show me the proof that automakers can legally deny a warranty claim on an engine part, when a non-API oil is used and the oil itself did not fail.
Originally Posted By: Pablo
Originally Posted By: Big Jim
You just don't get it. Automakers can and do deny warranty claims when oil that doesn't meet their requirements is used and there is a lubrication failure. Quit telling everyone they can't. They can and do. You have been drinking from the Amsoil fountain of knowledge too long.
I "get it" just fine. Your words belie that perhaps you don't get it or again someone is putting words in my mouth.
When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure". OF COURSE if the lubricant fails the manufacturer can and will deny a warranty claim. And please tell me exactly what that manufacturer would do if an "API" oil was in the crankcase and the oil failed? (even with receipts and the whole bit)
And again - please tell me that Amsoil is just totally wrong with their (not my) statements. 30+ years in business and they just make up this junk?? Come one, expand and learn.
Thanks - have a great Christmas!
Is this not what you said?
"On the other hand, no one (again) has proved the dealer has legal right, and can legally void the warranty for using non-API listed oil, in particular and oil exceeding all the sequence test requirements. "
Automakers don't "void" warranties, they deny warranty claims. If you have lubrication related engine failure and it appears that your maintenance has been negligent you will be asked for maintenance records. If the records show you have exceeded the oil change interval or have used the incorrect lubricant, your toast. It's that simple. Trying to claim that "it's as good as API certified oil" if it isn't certified just will not cut it. If the records look fraudulent you are also SOL.
That is what I wrote, but again: "When exactly (and I want the quote, please) did I write or say or even imply : Automakers can't deny a "warranty claim(s) when oil that doesn't meet their requirements is used and there is a lubrication failure".
I'm telling you, I never wrote that, said that, implied that, uttered that or meant that. Those were your words.
In your opinion "your toast" and "just will not cut it". That really means nothing. It's just your opinion! Please, I'm just as tired of this as you guys are. Show me the proof that automakers can legally deny a warranty claim on an engine part, when a non-API oil is used and the oil itself did not fail.
Guys and Gals:
We have gone to court on similar issue and beat the dealership on the denial of the claim for Breach of Warranty, Fraud, etc.. You need to be very clear that you made an attempt to follow the guidelines governed by the warranty requirements. They can not tell you to use a specific oil or part, and lack of that, will void your warranty. The only way they can do that is if they provide that part free of cost in order to meet that requirement. However, if you are clearly negligent, and do not follow the general guidelines, it will be clear in the majority that the intent to follow the rules was not there. You will lose.
Suggest you come close to what the manufacture expects and keep careful records of everything. Always keep all receipts, dates, mileage, and log all maintenance events. If anything should happen they will want to know how strong their position is against you. If you are doing this most will honor the warranty without a hassle.
We have gone to court on similar issue and beat the dealership on the denial of the claim for Breach of Warranty, Fraud, etc.. You need to be very clear that you made an attempt to follow the guidelines governed by the warranty requirements. They can not tell you to use a specific oil or part, and lack of that, will void your warranty. The only way they can do that is if they provide that part free of cost in order to meet that requirement. However, if you are clearly negligent, and do not follow the general guidelines, it will be clear in the majority that the intent to follow the rules was not there. You will lose.
Suggest you come close to what the manufacture expects and keep careful records of everything. Always keep all receipts, dates, mileage, and log all maintenance events. If anything should happen they will want to know how strong their position is against you. If you are doing this most will honor the warranty without a hassle.
If the warranty requires API SM, etc, etc, etc, meeting certain other requirements (Eg: a Ford, GM or other requirement unique to that mfg), and that product is available thru the dealer as well as over the counter its best you use that product and not something else. The only time the dealer has to give you the product free according to the law is if they are the only company that makes it, or sells it, and its use is mandatory to satisfy a warranty. So you are free to buy oil where ever you like if it meets the car makers specs. If it doesn't clearly state it meets those specs you're playing Russian Roulette with one than 1 bullet in the gun.
Are there better oils, sure, do you feel lucky? Maybe. My Jeep spelled it out pretty clear, API SM MS-6395, there are plenty of oils that are API SM and not mention MS-6395. I found one that said both. Several brands offer it, others don't. I bought one that said both.
Good records and proof of purchase is a must as well.
Frank D
Are there better oils, sure, do you feel lucky? Maybe. My Jeep spelled it out pretty clear, API SM MS-6395, there are plenty of oils that are API SM and not mention MS-6395. I found one that said both. Several brands offer it, others don't. I bought one that said both.
Good records and proof of purchase is a must as well.
Frank D
Amkeer - VERY well said.
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