I agree and I'm not saying whether the guy's engine warranty claim should or should have not been denied as I don't know and I doubt whether anyone else here knows all the details surrounding the issue.
All I'm saying is that Mobil 1 ESP 0w-40 is fine to use in any C7 and GM is not going to deny an engine warranty claim solely because you put it in a non- tracked pre-2019 C7.

 

Absolutely agree. If you don't track it, no worries.

 

For my '18 semi-daily driver I use what it "recommends" on the filler-cap... and it ain't 0W-40.

 

Hum, Look what my '17 GS cap says, how did that happen

 

I still use 5W-30 in my ‘14. I do not track my car, do not drive the car in extremely cold weather, and that spec oil is recommended in the owner’s manual. Good enough for me.

 

HAHA, looks like someone changed their cap like I did ...

 

So you need a new filler cap ...

 

I bought two 5 quart jugs of Mobil 1 0W-40 for European cars . Called Mobil to ask if this was OK with a 2019 Corvette and he said NO! The European variety of this oil has additives that will shorten the life of your catalytic converter. SO I returned it to Auto zone. The Mobil guy says they only sell the American version in one quart and 55 gal drums and the one quart size is available from Walmart online.
I'm just gonna take it to the dealer and use my "points" (if I can ever figure out how to use them) and have them change the oil. They did my warranty covered 500 mile change now that I'm down to 25% I'll have them do the regular change

 

It is a bit confusing, but there are 5 different Mobil1 0W40 oils available in Europe:
Mobil1 FS 0W40
Mobil1 New life 0W40
Mobil1 Turbo Diesel 0W40
Mobil1 ESP 0W40
Mobil1 ESP X3 0W40

https://www.mobil.co.uk/en-gb/site-s...sort=relevancy

The last two have a Dexos 2 approval and are used by Corvette dealers in Germany.
Personally I use the Mobil1 ESP X3 0W40, since I consider it the best one.
I consider this the best for our Corvettes, if you can get it, don't worry to use it.

https://www.mobil.co.uk/en-gb/produc...-esp-x3-0w-40/

Regards

Götz

 

A 0w oil is good for protection down to -40°C. A 5w oil is -35°C. When GM says the M1 is the only oil they designed for the Corvette to help protect during cold starts, they aren't saying that it's the only oil that will protect in cold starts, it's just the only oil that they "designed" with Mobil1.

The difference is ACEA C3 vs ACEA A3/B4. Mobil 1's ESP 0w-40 is not the only ACEA C3 oil out there. I don't need a 0w oil in Central Texas on my Corvette with Summer only tires that I don't want to run when it's below 50°F anyways. I could get by on a 10w or a 15w as well, but I like the specifics specs that I have found on another ACEA C3 oil in the 5w-40 viscosity from Ravenol. Ravenol RUP is a 5w-40 that carries GM's dexos2 certification and has superior specs to the Mobil 1 product. It was a little more expensive but not much if you catch Blauparts with a sale.

The first step into understanding what you are looking at in your motor oil is to understand what the pertinent specs are. Then, you need to be able to discern what you looking for in each spec so you can tell between desirable and undesirable attributes. Kinematic viscosity, HTHS, pour and flash point, SAPS, SA, TBN, Noack. Then, you need to understand API, ACEA, and manufacturer approvals. Once you pick up the trends on the approvals you can begin to discern what a specific approval is looking for. GM dexos2 is essentially an ACEA C3 spec. The C3 spec not too long ago was actually focused on diesels because of the emissions, but these properties also benefit a DI motor so as to minimize residual particular matter (PM) on the intake valves. A low Noack is great for DI motors, and the way you get a low Noack (measures evaporation loss,) is with a quality base stock. Group IV or V PAO base stocks are hard to beat as they require less VI's to prevent shearing of the oil.

I think part of the reason Mobil 1 came up with the 0w-40 ESP is so they could claw back a little at the market share they lost to Corvette owners (folks who show a willingness to spend a little more than the GP when it comes to their vehicles,). Notice how you don't see Mobil 1 ESP 0w-40 in 5qt jugs at Walmart? Mobil 1 doesn't want you buying 5 quarts of oil on WM rollback pricing at $25 a 5qt jug with a M1 $12 rebate. Mobil 1 is also unnecessarily coy on what their M1 ESP 0w-40 product is here in the US. Hint: it's an ACEA C3 oil and in fact, you can buy M1 ESP 0w-40 in Europe in 5L jugs with ACEAS C3 stamped right on the front. Do you wonder why that is? Answer: Corvette tax.

 

I use the 0w-40 Mobil 1 in my 2016 Stingray A8 because the engine is quieter on start up here in Texas.