DEXOS Oil
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 2,936
Likes: 260
From: Westchester County New York
Just checked Royal Purples website...it says they exceed DEXOS 1 standards...do we need 1 or 2 I wonder....and I guess Royal Purple doesn't want to pay GM for the designation...
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
"Exceed" isn't sufficient if you have an internal engine issue and GM decides to play hardball on the warranty. If you are leaving the car stock to preserve your warranty then to me it isn't worth the risk to use an oil that doesn't carry the DEXOS label.
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Get yourself some Mobil 1 5/30 Extended. Dexos label and better than regular Mobil 1.
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Racer
Joined: Nov 2013
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Le Mans Master
Joined: Sep 2003
Posts: 8,847
Likes: 795
From: Longview Texas
Most of the full synthetic oils now meet Dexos standards.
Valvoline Syntec warrants engines for 300,000 miles against oil related failure...
For street use, engine failures are rare, even with conventional oil.
Valvoline Syntec warrants engines for 300,000 miles against oil related failure...
For street use, engine failures are rare, even with conventional oil.
Moderator
Joined: Feb 2006
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From: DFW Area TX
Melting Slicks
Joined: Mar 2006
Posts: 3,249
Likes: 545
From: Land of the free, home of the brave...
List of Dexos 1 certified oils: Dexos 1 Approved
Last edited by Crossed Flags Fan; Apr 23, 2014 at 03:38 PM.
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 2,936
Likes: 260
From: Westchester County New York
Racer
Joined: Jul 2010
Posts: 392
Likes: 3
From: Palm Coast Florida
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 2,936
Likes: 260
From: Westchester County New York
Instructor
Joined: Jun 2013
Posts: 135
Likes: 0
From: Rochester NY
I just got my first oil change last week at 3k miles. The dealership said the C7 doesn't require synthetic but I insisted they use it anyway and pay the difference. My service tech agreed with me and they ended up not charging me for anything.
