This question comes up often. a definitive answer per G.M. is given but others have their opinion counter to the Manufacturer
Engine Oil
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,847
Likes: 12,286
From: NE South Carolina
The SuperTECH is dexos approved, shows on the pics above. Even if packaged by Mobil - why pay 59% more!
Last edited by JerryU; May 13, 2018 at 11:05 AM.
Burning Brakes
Joined: Feb 2006
Posts: 983
Likes: 364
From: Stafford Virginia
Umm.. the pic was the generic one just for a visual reference. But, I fixed it so you can sleep better at night. Do you think they are going to sell 0W40 ESP Mobil 1 without the Dexos2 indicated considering they developed it specifically for GM with the Corvette in mind? Of course not. And it is for sale at dealerships. So one could simply drive to his/her dealership and buy as much as they need for their oil change.
Team Owner
Joined: Apr 2013
Posts: 26,203
Likes: 4,327
From: Chirper Island
Umm.. the pic was the generic one just for a visual reference. But, I fixed it so you can sleep better at night. Do you think they are going to sell 0W40 ESP Mobil 1 without the Dexos2 indicated considering they developed it specifically for GM with the Corvette in mind? Of course not. And it is for sale at dealerships. So one could simply drive to his/her dealership and buy as much as they need for their oil change.
Instructor
Joined: Jul 2017
Posts: 160
Likes: 50
From: Princeton NJ
Safety Car
Joined: Jan 2015
Posts: 3,830
Likes: 394
From: Rocky Mountains
The only reason the high mileage version isn't dexos approved is due to emissions. Dexos specifies a certain level of zinc. The high mileage version used to have more zinc that regular M1. That said, I doubt there are many C7 that need high mileage oil yet.
1st Gear
Joined: Jul 2020
Posts: 1
Likes: 0
C7 oil
aloha kitesurfer
how did it work out running 0w20 in your c7? How long did you run it, still using it?
I couldn’t find 0w40 and put 0w20
since my Escalade uses it. I didn’t think would be a big deal but the mobile one guys said wouldn’t recommend using 0w20 and said go 5w30 for street use only if can’t find 0w40.
Melting Slicks
Joined: Dec 2017
Posts: 2,012
Likes: 955
From: Central Commiefornia
It's impossible to prove a negative, but I've been using Mobil 1 for decades in a half dozen cars without a problem, making me a satisfied user from the jump.
Since GM recommends Mobil 1 and it's never been an issue, the additional $0.003 per mile is cheap insurance for a $70k investment. While I resist wasting money IMO engine oil is something I don't want to be cheap about.
Since GM recommends Mobil 1 and it's never been an issue, the additional $0.003 per mile is cheap insurance for a $70k investment. While I resist wasting money IMO engine oil is something I don't want to be cheap about.
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