Differential Oil

Reply Subscribe

Thread Tools

Search this Thread

Feb 14, 2012 | 08:39 PM

GMAN04

Thread Starter

Cruising

Joined: Feb 2012

Posts: 10

Likes: 0

Differential Oil

I have been reading about Dexron 75/90 LS gear oil for Corvettes. My question is, Is This oil synthetic ? and is it recommended for C5s or just C6s. I am going to change the differential oil in my C5 and was a bit confused about the recommendations. I have no problems with my differential. Its just time to service it.

Thanks.

Feb 14, 2012 | 08:58 PM

CCA Corvette Parts

Premium Supporting Vendor

Joined: Oct 2004

Posts: 36,838

Likes: 438

From: Manassas Park VA

St. Jude Donor '07-'08,-'13-'14, '16-'17

Royal Purple - Max-Gear 75w-140

Period...

Peace
Chip

__________________
..................Click for

Feb 14, 2012 | 09:02 PM

GMAN04

Thread Starter

Cruising

Joined: Feb 2012

Posts: 10

Likes: 0

Do you use any additive with it ?

Feb 14, 2012 | 09:06 PM

blacksedan87

Race Director

Joined: Aug 2003

Posts: 16,270

Likes: 30

From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and

St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19

NCM Sinkhole Donor

Quote:

Originally Posted by CCA Corvette Parts

Royal Purple - Max-Gear 75w-140

Period...

Peace
Chip

This is what I use....it already has the limited slip additive in it.

Feb 15, 2012 | 08:45 AM

oh1vette

Safety Car

Joined: Sep 2008

Posts: 4,753

Likes: 167

From: Youngsville North Carolina

I used the Amsoil Severe Gear a year ago and no problems.....

Feb 15, 2012 | 08:53 AM

Toque

Tech Contributor

Joined: Jan 2004

Posts: 20,030

Likes: 289

From: Wylie TX --> Less is More, except under the hood !

Procedure on my web page on how to do the fluid change.

www.ToqueZ06.com

I used Amsoil and am very happy so far.

Hope this helps.

Toque

Feb 15, 2012 | 09:17 PM

C66 Racing

Premium Supporting Vendor

Joined: Aug 2001

Posts: 5,364

Likes: 38

From: King George VA

Quote:

Originally Posted by GMAN04

There was a post recently by a member that changed the Dexron LS and it lead to a probably lowering in performance of his limited slip diff (less limited slip). I suspect the Dexron LS has too much additive for the C5 diff.

I use and recommend this without extra additive as it has additive already in it but at low enough levels to prevent diff chatter without inhibiting performance of the diff:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)