Differrential oil for 72 Corvette
Thread Starter
Instructor
Joined: Jul 2009
Posts: 155
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Differrential oil for 72 Corvette
Hi Guys, just finishing up my 72 Vette and getting ready for registration in Dubai. I'm posting a pic of the differential oil and limited slip additive I'm planning to use. I'm unsure if these are compatible as oil is 100% synthetic, will this be OK???? Appreciate any advice from the lube guys.
Cheers Greg.
Cheers Greg.
Drifting
Joined: Aug 2009
Posts: 1,346
Likes: 160
From: new iberia la
You can buy Synthetics with additive already in it .. I have used 7 oz Trans X Limited slip Additive for decades .. recommended for both Dino and Synthetic.. Put the additive IN FIRST, then fill .. drive around for half hour turning right and left
Race Director
Joined: Feb 1999
Posts: 19,659
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From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
It says right on the bottle that it is for Limited Slip. I would not use the additive with it and go with the gear oil only.
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
I run synthetic (Mobil1) + the GM additive and it's fine. Years ago I used just a bottle of synthetic gear oil that said it contained limited slip additive and it groaned around corners. Since then I always add a bottle of the additive regardless of what the gear oil bottle says.
Melting Slicks
Joined: Jan 2000
Posts: 3,326
Likes: 523
From: home
The additive causes the posi plates to slide more freely between themselves which lowers the tightness of the posi and under extreme use causes more heat and wear. I don't use any additives in any diff I do. I use mostly Mobil 1 75-90 Delvac, but have also had good luck with Redline and Royal Purple.
