I see no reason to deviate from Mobil 1.
Best Oil
Race Director
Joined: Nov 2004
Posts: 11,071
Likes: 1,293
From: Central Ma
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Melting Slicks
Joined: Mar 2007
Posts: 2,342
Likes: 0
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Safety Car
Joined: Nov 2000
Posts: 4,419
Likes: 6
From: Arroyo Grande CA
Safety Car
Joined: Nov 2000
Posts: 4,419
Likes: 6
From: Arroyo Grande CA
My OM just states to use an oil that meets GM 4718M specs. The oil fill cap on the engine just says Mobil 1 is the factory fill. Nothing more, nothing less.
Drifting
Joined: Feb 2005
Posts: 1,643
Likes: 167
Those of you who are saying that Mobil 1 isn't a fully synthetic oil anymore, where do you get that idea? According to their web site, it still is.
http://www.mobil1.com/USA-English/Lu...bil1_5W-30.asp
Show me something that says it isn't anymore and I'll believe you. Otherwise, get your facts straight before posting.
http://www.mobil1.com/USA-English/Lu...bil1_5W-30.asp
Show me something that says it isn't anymore and I'll believe you. Otherwise, get your facts straight before posting.
Racer
Joined: Dec 2005
Posts: 270
Likes: 1
From: Springfield OH
From a 2000 owners manual
"You should look for this on the oil container, and
use only those oils that are identified as meeting GM
Standard 4718M and have the starburst symbol on the
front of the oil container.
Your vehicle’s engine is filled at the factory with a
Mobil 1 synthetic oil, which meets all requirements
for your vehicle.
Substitute Engine Oil: When adding oil to maintain
engine oil level, oil meeting GM Standard GM4718M
may not be available. You can add substitute oil
designated SAE 5W-30 with the starburst symbol at all
temperatures. If temperatures are above 0F (-18C),
you may substitute SAE 10W-30 with the starburst
symbol. Substitute oil not meeting GM Standard
GM4718M should not be used for an oil change."
The manual also has a picture of the oil fill cap with the Mobil 1 on it.
So you can go both directions in the thread. Use only Mobil 1 or use oil that meets GM 4718M
Anyone concerned with warranty, just document that the oil changes were done at proper intervals and the oil used met the standard. Perhaps you may be in a better position if you stay with the factory fill.
With that said - Wally World right now has Mobil 1 5-30 for $17.78 for 5 quarts. The oil meets GM4718M. And this is what I use.
Drifting
Joined: Nov 2005
Posts: 1,801
Likes: 0
From: Peterborough"I'd rather be topless than all couped up" Ontario
St. Jude Donor '07-'08-'09-'10