Optimal oil for a C6 Corvette?

VeganJoy

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Looks like Chevy did update their oil filter spec in 2007 to a PF48. If you have a 2005 or 2006 model then it takes the PF44 or 46. The M1 for those is M1-107. The filters are the same size physically, but have a different thread mounting pitch, so they are not interchangeable apparently.
Stick with OEM spark plugs and wires. I've seen enough issues with different plugs and wires that I wouldn't mess with what works just fine.
Not sure if a shop can wrap the headers now that they are installed. Not worth it to have them removed just to wrap them. For the money you would throw at it for that, I would probably just replace the starter for peace of mind and I believe there is a bolt on heat shield available to help protect the starter.
ah that makes sense. oem spec it is!

and yesss your vette looks sick! gtr carbide headlights, morimoto fogs, and vettelights side markers? really torn on headlights and fogs cause i like how stock looks and at the very least ill get some led bulbs but the morimoto and gtr carbide offerings look really good too...

The "regular" Mobil 1 0W-40 FS. Meets Porsche A40.

View attachment 97238

There is an ESP version with green label, and that one is mostly for European diesels. Meets Porsche C40 (diesel emissions friendly)
View attachment 97239
Click here for list of Porsche A40 approved oils. Sometimes you can look at the back of the bottle and see which standards/certifications an oil claims to meet. Just remember: "Meet & Exceed" is not the same as "Approved". If in doubt - ask BITOG, or check oil manufacturers website. Most of the time - oils rated for "European" vehicles end up meeting much more stringent specs/certs than basic API SP 5W30.

For myself - Mobil 1 0W40 or Castrol Edge 0W40 is what I use in everything: from my liquid-cooled 4.3hp 49cc scooter, to a 375hp 4.6L Huyndai Genesis, and 7 other vehicles in between (V6, V6-hybrid, I6, I4, few single cylinder engines). Truly a universal oil.
that ESP version is the factory fill for corvettes since 2019 and retroactively suggested by mobil/gm for a ton of the older ones. figured the "euro" blends would meet better specs. will consider these too, though they seem 80-100% more expensive than normal synthetic 5w30

any recommendations as far as used oil analysis these days? amsoil has some kits that seem a bit cheaper than blackstone but idk if they want you to pay shipping both ways on em.

also, when we say "full synthetic" is there much point in bothering with group 3 vs 4 vs 5? do we even know what base stocks the companies use anymore? i'm guessing it doesnt really matter for this...

lastly, any additives or flushes or whatever that i should run through the system? seal conditioner, gumout, that sorta thing? or is that usually just marketing/placebo as well?
 
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that ESP version is the factory fill for corvettes since 2019 and retroactively suggested by mobil/gm for a ton of the older ones. figured the "euro" blends would meet better specs. will consider these too, though they seem 80-100% more expensive than normal synthetic 5w30

any recommendations as far as used oil analysis these days? amsoil has some kits that seem a bit cheaper than blackstone but idk if they want you to pay shipping both ways on em.

also, when we say "full synthetic" is there much point in bothering with group 3 vs 4 vs 5? do we even know what base stocks the companies use anymore? i'm guessing it doesnt really matter for this...

lastly, any additives or flushes or whatever that i should run through the system? seal conditioner, gumout, that sorta thing? or is that usually just marketing/placebo as well?
- From Wal-Mart M1 5W-30 or M1 0W-40 is same price, at least in my area. Price is close to Amazon for a 5qt jug, which is under $25. The ESP is the expensive beast, and not worth the premium, in my opinion.

- Blackstone labs is the go-to around here for UOA. Once in a while a great deal pops up for $10/UOA from WIX, through RockAuto. Although it's been a while since that happened... But Blackstone is a great option for the money. I think people also prefer it more due to more human-like comments, rather than robotic-like stats from other labs. Creates a sense of friendly conversation. For any questions regarding Amsoil - hopefuly @Pablo can chime in.

- Doesn't matter for the oils in question. We can split hairs all day and discuss ingredients until keyboards fall apart, but in the end what matters is the final oil formulation and how it all works together. M1 0W-40 proves time and time again to be a great oil in a wide range of applications, through UOAs and other feedback.

- Skip the additives and flushes, unless you know that your engine needs some cleaning. M1 0W-40 will clean things up over time and keep them clean, as long as intervals aren't being neglected and correct oil level is being maintained.
image-25.jpg
 
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VeganJoy

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- From Wal-Mart M1 5W-30 or M1 0W-40 is same price, at least in my area. Price is close to Amazon for a 5qt jug, which is under $25. The ESP is the expensive beast, and not worth the premium, in my opinion.

- Blackstone labs is the go-to around here for UOA. Once in a while a great deal pops up for $10/UOA from WIX, through RockAuto. Although it's been a while since that happened... But Blackstone is a great option for the money. I think people also prefer it more due to more human-like comments, rather than robotic-like stats from other labs. Creates a sense of friendly conversation. For any questions regarding Amsoil - hopefuly @Pablo can chime in.

- Doesn't matter for the oils in question. We can split hairs all day and discuss ingredients until keyboards fall apart, but in the end what matters is the final oil formulation and how it all works together. M1 0W-40 proves time and time again to be a great oil in a wide range of applications, through UOAs and other feedback.

- Skip the additives and flushes, unless you know that your engine needs some cleaning. M1 0W-40 will clean things up over time and keep them clean, as long as intervals aren't being neglected and correct oil level is being maintained.
View attachment 97242
very promising results, wonder how different their euro formula is from the usual M1.

do yall figure the cheapo acdelco filter is alright or should i just get the M1/wix? 2x-3x the cost but its only a few bucks i guess https://www.amazon.com/ACDelco-PF46E-Professional-Engine-Filter/dp/B00496ILZC/
 

VeganJoy

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If not running it hard or tracking it.....5W30 is more than adequate. Use a full synthetic from your favorite brand.

The PF48E gets some hate, But I've never seen one cause damage. I run a UPF48R on my L92 (Converted to LS3) engine.
I was considering a UPF46R but it seems they hardly make em anymore and they’re like 20 bucks compared to wix/M1 at 12 bucks or a plain blue PF46E for 3-4 bucks. Not sure which is the best option since the PF is so cheap lol
 
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Well, at the risk of stirring the pot on oils, I just bought a 2019 C7 corvette, which of course specs the M1 ESP 0W-40. I'd prefer to run the M! Euro car formula 0W-40 due to the availability and price. Since this is primarily a autocross/hill climb car, the oil will be changed pretty frequently.

Any thoughts on ESP vs EURO M1 0W-40? I have read many threads on line regarding the two. I'd prefer whichever one is thicker at high temperature, but I don't want to cause CAT or PVC issues.
 

VeganJoy

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No problem with OEM filters...
i'm pretty sure vettes havent came with plain ol blue acdelco filters but i can't find what's actually "oem" since they changed to pf48s for the majority of c6 production

Well, at the risk of stirring the pot on oils, I just bought a 2019 C7 corvette, which of course specs the M1 ESP 0W-40. I'd prefer to run the M! Euro car formula 0W-40 due to the availability and price. Since this is primarily a autocross/hill climb car, the oil will be changed pretty frequently.

Any thoughts on ESP vs EURO M1 0W-40? I have read many threads on line regarding the two. I'd prefer whichever one is thicker at high temperature, but I don't want to cause CAT or PVC issues.
i've heard nothing but good things about the ESP formula, a few folks have had VOAs done on it here if you want more specifics. whatever difference in actual weight between the ESP and euro 0w-40 is not likely to be significant. if autocross/hillclimb is the primary use then maybe a dedicated racing oil would be best? 15w-50 has been the recommended track fill for LS and LT engines up until 2019. the 0w-40 is kind of a middle ground between street and track performance so you dont have to change your oil as often if you go to the track (but you should still change it anyways so maybe go for the racing stuff?)
 
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i'm pretty sure vettes havent came with plain ol blue acdelco filters but i can't find what's actually "oem" since they changed to pf48s for the majority of c6 production


i've heard nothing but good things about the ESP formula, a few folks have had VOAs done on it here if you want more specifics. whatever difference in actual weight between the ESP and euro 0w-40 is not likely to be significant. if autocross/hillclimb is the primary use then maybe a dedicated racing oil would be best? 15w-50 has been the recommended track fill for LS and LT engines up until 2019. the 0w-40 is kind of a middle ground between street and track performance so you dont have to change your oil as often if you go to the track (but you should still change it anyways so maybe go for the racing stuff?)
Autocross and hill climb are short runs of 1 to 2 minutes, with cooling time in between, so I am not so worried about the heavier oil in that application. If I put it on the track, then I will likely change to the 15W-50 for that. But I would like to avoid changing that oil frequently ( to drive on the street after tracking) since it holds 10 qts....
 

CleanSump

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I was considering a UPF46R but it seems they hardly make em anymore and they’re like 20 bucks compared to wix/M1 at 12 bucks or a plain blue PF46E for 3-4 bucks. Not sure which is the best option since the PF is so cheap lol
Rock auto has the UPF46R for $7.16. Buy a bunch and some other odds and ends to make the shipping worthwhile.
 
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Nice Vettes.

I would use quality filter ((with correct bypass valve) and 10W30 syn oil.
 
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I was considering a UPF46R but it seems they hardly make em anymore and they’re like 20 bucks compared to wix/M1 at 12 bucks or a plain blue PF46E for 3-4 bucks. Not sure which is the best option since the PF is so cheap lol
Stock is running low on UPF46R filters, Nothing wrong with a PF46E filters & is what I run on all Gen III/Early Gen IV LS engine that comes through my shop which is A LOT!
 

VeganJoy

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Rock auto has the UPF46R for $7.16. Buy a bunch and some other odds and ends to make the shipping worthwhile.
Ooh tempting! Never checked out rockauto before. Seems like the Wix filters through them are ~9 bucks, would those be much different than the UPF?

Stock is running low on UPF46R filters, Nothing wrong with a PF46E filters & is what I run on all Gen III/Early Gen IV LS engine that comes through my shop which is A LOT!
The PFs do seem **** cheap compared to anything else… what kinda shop do you run?
 
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