It was suggested to me at the time, before I knew about this forum, that the Mobil 1 was "slicker" and was getting past rings and seals that an inferior oil could not. I thought it a wives tale until time suggested it to be true.
xW-40 in GM 5.3
- Thread starter blsnelling
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I don't doubt that.
Are you suggesting that the 5w-40 would be better for the LS1 than 0w-40? It just seemed to me that the 0w-40 would give the best of both worlds with low temp pumpability and a thicker oil which the LS1 is now being reported to like.
[ March 12, 2004, 07:28 PM: Message edited by: blsnelling ]
I'd just run them back to back and see what you think...
Fuel efficiency and cold temp "driveability" will be better with the 0w-40, but I'd bet iron wear and oil consumption are both 25% to 33% lower with Delvac 1. Of course if you are only keeping the vehicle for 100k miles, I'd go with the higher fuel efficiency.
Fuel efficiency and cold temp "driveability" will be better with the 0w-40, but I'd bet iron wear and oil consumption are both 25% to 33% lower with Delvac 1. Of course if you are only keeping the vehicle for 100k miles, I'd go with the higher fuel efficiency.
Hi,
then, there is always the issue of reality!
The LS1 engine here in Australia which is delivered with a special GM formulation Mobil 1 10w30 has much less oil consumption and noise when on Mobil 1 5w-50! It sacrifices very little power!
Ted, there are many people here that use the Mobil 1 5w-50 - a broad range oil - with any serious deterioration. Low volatility? It doesn't seem to affect it much then when many vehicles here run in ambient temps of 42C+ and I've never heard a complaint of excessive oil consumption with it. It is widely used in the Porsche fraternity that I live in - in fact the most popular oil of them alland right around the World too!
Perhaps we get carried away with the theory and forget the practice
And as Jerry quite rightly stated, yes, Delvac 1 5w-40 would be ideal for this engine! Or the new Mobil 1 Truck and SUV 5w40 - great value for money and very durable products too
And we should all remember perhaps that multigrade oils are just that - for many people - a year round oil that works well for the average user - all year round as the manufacturer intended. Of course it must have the correct viscosity range etc. and it should changed when recommended
Regards
then, there is always the issue of reality!
The LS1 engine here in Australia which is delivered with a special GM formulation Mobil 1 10w30 has much less oil consumption and noise when on Mobil 1 5w-50! It sacrifices very little power!
Ted, there are many people here that use the Mobil 1 5w-50 - a broad range oil - with any serious deterioration. Low volatility? It doesn't seem to affect it much then when many vehicles here run in ambient temps of 42C+ and I've never heard a complaint of excessive oil consumption with it. It is widely used in the Porsche fraternity that I live in - in fact the most popular oil of them alland right around the World too!
Perhaps we get carried away with the theory and forget the practice
And as Jerry quite rightly stated, yes, Delvac 1 5w-40 would be ideal for this engine! Or the new Mobil 1 Truck and SUV 5w40 - great value for money and very durable products too
And we should all remember perhaps that multigrade oils are just that - for many people - a year round oil that works well for the average user - all year round as the manufacturer intended. Of course it must have the correct viscosity range etc. and it should changed when recommended
Regards
Hi Doug:
Good points on the application and the results from the rest of the world.
I try not to be the cynic but to approach this issue with an open mind. I'm sure Mobil 1 0W-40 is a fine oil and perhaps could be used year-round even in my climate.
I would even be willing to try Mobil 1 0W-40 just to see how it holds up. It's just so hard to get around here, however I am planning a trip to Minneapolis soon, maybe I could find it there.
The big challenge I have is the extreme cold winters I have to deal with. Thanks to the numerous startup, warmup, and short driving cycles, even bypass filters are limited in what they can remove.
So I'm usually stuck with OCI of every 6 months or so.
A BITOG forum member posted the link to the official EPA memo on "fuel saving" oils and I nearly flipped:
http://www.epa.gov/otaq/cert/dearmfr/ccd0112.pdf
Now if I understand the math correctly, you take the result of the 16 hour test, the result of the 96 hour test, and ADD THEM TOGETHER.
Then you add on 0.5%
So even an oil that does ABSOLUTELY NOTHING for fuel economy is still ranked as "improving" fuel economy 0.5%. Some folks go on and on about how this magic oil improved their fuel economy 1-2 MPG, say 20%. Pure rubbish.
I still find it suspicious that Ford and Honda in Europe do NOT approve or recommend an xW-20 oil.
For more on oil viscosity and the effect on the motor, check out Machinery Lubrication Magazine:
http://www.machinerylubrication.com/article_detail.asp?articleid=518&relatedbookgroup=Maintenance
http://www.machinerylubrication.com/article_detail.asp?articleid=529&relatedbookgroup=Lubrication
So there is nothing wrong with running a heavier oil as long as the lower MRV values are not exceeded. Since I believe in matching viscosity to climate, I run a very thin oil in winter and a heavier oil in summer while towing.
So try a HDEO like a 15w40 or a synlube HDEO like Rotella T 5W-40 or Delvac 1 5W-40. Or Mobil 1 15W-50, I've used it in my Vortec 5.3 towing 7,000 miles and it worked great.
Jerry
Good points on the application and the results from the rest of the world.
I try not to be the cynic but to approach this issue with an open mind. I'm sure Mobil 1 0W-40 is a fine oil and perhaps could be used year-round even in my climate.
I would even be willing to try Mobil 1 0W-40 just to see how it holds up. It's just so hard to get around here, however I am planning a trip to Minneapolis soon, maybe I could find it there.
The big challenge I have is the extreme cold winters I have to deal with. Thanks to the numerous startup, warmup, and short driving cycles, even bypass filters are limited in what they can remove.
So I'm usually stuck with OCI of every 6 months or so.
A BITOG forum member posted the link to the official EPA memo on "fuel saving" oils and I nearly flipped:
http://www.epa.gov/otaq/cert/dearmfr/ccd0112.pdf
Now if I understand the math correctly, you take the result of the 16 hour test, the result of the 96 hour test, and ADD THEM TOGETHER.
Then you add on 0.5%
So even an oil that does ABSOLUTELY NOTHING for fuel economy is still ranked as "improving" fuel economy 0.5%. Some folks go on and on about how this magic oil improved their fuel economy 1-2 MPG, say 20%. Pure rubbish.
I still find it suspicious that Ford and Honda in Europe do NOT approve or recommend an xW-20 oil.
For more on oil viscosity and the effect on the motor, check out Machinery Lubrication Magazine:
http://www.machinerylubrication.com/article_detail.asp?articleid=518&relatedbookgroup=Maintenance
http://www.machinerylubrication.com/article_detail.asp?articleid=529&relatedbookgroup=Lubrication
So there is nothing wrong with running a heavier oil as long as the lower MRV values are not exceeded. Since I believe in matching viscosity to climate, I run a very thin oil in winter and a heavier oil in summer while towing.
So try a HDEO like a 15w40 or a synlube HDEO like Rotella T 5W-40 or Delvac 1 5W-40. Or Mobil 1 15W-50, I've used it in my Vortec 5.3 towing 7,000 miles and it worked great.
Jerry
Doug any word on whether M1 SUV 5W40 will come here? You have better contacts than I do....s
Hi sprintman,
I really do not know. Delvac 1 seems to be appearing all over the place in 5ltr containers packaged attractively. And recently I was told "it fits into our plans" when I suggested a process concerning Delvac 1's national exposure and availability!
They ( EM ) slowly appear to becoming marketers again so heaven knows whats going on
Personally I expect them to "push" Delvac as a additional market stream alongside M1
Regards
I really do not know. Delvac 1 seems to be appearing all over the place in 5ltr containers packaged attractively. And recently I was told "it fits into our plans" when I suggested a process concerning Delvac 1's national exposure and availability!
They ( EM ) slowly appear to becoming marketers again so heaven knows whats going on
Personally I expect them to "push" Delvac as a additional market stream alongside M1
Regards
Why do people think Amsoil is so great?
Has amsoil made anyones engine last any longer than the engine would have lasted with any other comparable oil?
I'm not trying to bring a negative attitude here. I'm just trying to figure this whole marketing thing out.
Has amsoil made anyones engine last any longer than the engine would have lasted with any other comparable oil?
I'm not trying to bring a negative attitude here. I'm just trying to figure this whole marketing thing out.
I can't verify that it has made anyone's engine last longer, but it's a proven fact that it has allowed people to change their oil MUCH less frequently. That's really what it's advertised for. I'm personally looking at 15K mile OCI 2 times per year. That's without a bypass filter. I drive >30K miles per year on my GM 3800 just for work. That makes Amsoil very valuable to me.
Mobil 1 started out by advertising 25,000 miles per oil change but, manufactures said do it and NO warranty so Mobil backed off. They did respond by running engines 1,000,000 miles on Mobil 1 and then showed pictures and measurements demonstrating internal engine parts were within new tolerances. I buy Mobil 1 at walmart for 19.99 per 5 quarts with a warranty that if an oil related failure occures they will replace or rebuild my engine. Amsoil has shown me nothing of substance to date. Ed Hayes
Hi,
bisnelling - in evaluting issues one needs to be totally objective. I am sure you will find the 3MP 5000 miles report under Gas engine used oil analysis here of interest
Yes, following the manufacturer's recommended drains is very credible. Extending oil drain periods by the systematic use of used oil analysis is economical. Going by advertising hype and heresay is a risk - its a case of "cutting through the muck"!
For us who use engine lubricants as a professional end user the choice of oil is quite critical. It can affect the economic health of a Trucking business like mine for instance.
But I know of no oil that will dramatically extend engine life or is the "magic elixer" that many promote
I do know that be evaluation and testing and then using the correct product for the task there can be significant economic benefit
See my posts on my Porsche in the Gas UOA section and some Detroit Diesels in the Diesel UOA section and you will see what I mean
Watch the 3MP used oil analysis as time evolves it is a fair and practical evaluation of Mobil 1 and Amsoil in a GMV8. It is not the same but it is much like Jerry and I do and have done in our Trucking businesses on opposite sides of the World
I am NOT in the oil business and have no "strings" to ANY oil Company either!
Regards
bisnelling - in evaluting issues one needs to be totally objective. I am sure you will find the 3MP 5000 miles report under Gas engine used oil analysis here of interest
Yes, following the manufacturer's recommended drains is very credible. Extending oil drain periods by the systematic use of used oil analysis is economical. Going by advertising hype and heresay is a risk - its a case of "cutting through the muck"!
For us who use engine lubricants as a professional end user the choice of oil is quite critical. It can affect the economic health of a Trucking business like mine for instance.
But I know of no oil that will dramatically extend engine life or is the "magic elixer" that many promote
I do know that be evaluation and testing and then using the correct product for the task there can be significant economic benefit
See my posts on my Porsche in the Gas UOA section and some Detroit Diesels in the Diesel UOA section and you will see what I mean
Watch the 3MP used oil analysis as time evolves it is a fair and practical evaluation of Mobil 1 and Amsoil in a GMV8. It is not the same but it is much like Jerry and I do and have done in our Trucking businesses on opposite sides of the World
I am NOT in the oil business and have no "strings" to ANY oil Company either!
Regards
I am bumping this hoping to hear some real-world experience on the 5.3 w/*w40 oils. I just bought a 2001 Suburban w/5.3 and it has 45,000 miles. I am thinking about running an auto-rx then Mobil 1 oil. The manual calls for 5w30 and I have been running this oil 5000 miles in my Mazda MPV and Mazda B4000 w/o any consumption. Does the 5.3 by nature use oil or should I expect very little consumption? Will the 0w40 Mobil 1 work well in this application? I can get it at a local Walmart for $3.74/qt. Or should I stick w/5w30?
Thanks!
Thanks!
drm7
I have had 3 GMC E.Cab Z71 4x4 trucks (99,01 & 04) with 5.3L engines and not one has used any oil at all. I have been using 5w30 Syn in all of them. I get the conventional oil out ASAP when I get the trucks.
I don't think you will gain any advantage using an ?W-40 oil. GM specifically recommends against using it.
I have had 3 GMC E.Cab Z71 4x4 trucks (99,01 & 04) with 5.3L engines and not one has used any oil at all. I have been using 5w30 Syn in all of them. I get the conventional oil out ASAP when I get the trucks.
I don't think you will gain any advantage using an ?W-40 oil. GM specifically recommends against using it.
Heyjay Jerry--Have not seen you for a while--hope everything is OK. What do you think of running the new full syn. XD-3 0W40 all year round in 3116 Cat. Roger
My experience with oil and a 5.3,
oil I have used
Mobil 1 0w30
Mobil 1 5w30
Rp 5w30
Rp 10w30
Mobil 1 10w30
GC 0w30
Never had an oil useage issue with any of the above,mileage has never changed much between any brand/grade...Quietest and smoothest to date is the GC,will see how a 6k uoa looks when I get there.....
oil I have used
Mobil 1 0w30
Mobil 1 5w30
Rp 5w30
Rp 10w30
Mobil 1 10w30
GC 0w30
Never had an oil useage issue with any of the above,mileage has never changed much between any brand/grade...Quietest and smoothest to date is the GC,will see how a 6k uoa looks when I get there.....
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