Straight Amsoil, no noise
Rear Differential Fluid
Thread Starter
Racer
Joined: May 2013
Posts: 365
Likes: 19
From: Hugo MN
Rear Differential Fluid
I checked with the Chevy dealership and they use Dextron LS 75w-90 Gear Lube that has the additive for limited slip in it.
1) I'm wondering if this is what you're are using today as I looked at some old threads and found other products being suggested.
2) I have around 40k on the car and I change the oil every fall and have changed the coolant last year, but I don't believe the rear differential has been changed. The manual isn't based on months or years, but rather miles, and I have a long way to go to reach that threshold. In prior threads most suggest replacing the fluid for piece of mind while others have suggested not replacing the rear differential until needed as they began experiencing rear end noise "after" replacing the fluid. As a result of several of these posts I have held off.
I would appreciate any comments or recommendations on this. Thanks!
1) I'm wondering if this is what you're are using today as I looked at some old threads and found other products being suggested.
2) I have around 40k on the car and I change the oil every fall and have changed the coolant last year, but I don't believe the rear differential has been changed. The manual isn't based on months or years, but rather miles, and I have a long way to go to reach that threshold. In prior threads most suggest replacing the fluid for piece of mind while others have suggested not replacing the rear differential until needed as they began experiencing rear end noise "after" replacing the fluid. As a result of several of these posts I have held off.
I would appreciate any comments or recommendations on this. Thanks!
Melting Slicks
Joined: Dec 2011
Posts: 2,509
Likes: 946
From: Western New York
ironranger thanks for posting question. I will be looking at responses. I have been thinking of having fluid changed also. Can't see were in any of my paper work on car that the fluid was changed. I have a 04 with 15,000 miles. Concerned with age of oil in differential. I went to a corvette shop and they said they use Dextron with additive also.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Thread Starter
Racer
Joined: May 2013
Posts: 365
Likes: 19
From: Hugo MN
Thanks for all of the responses thus far. It sounds like either Dextron or Amsoil will do the job. This is something I will let the dealership do and at this point I will probably be okay with them using Dextron, which they spec out for it.
If anyone experiencing any issues after changing this fluid, let me know!
If anyone experiencing any issues after changing this fluid, let me know!
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Thread Starter
Racer
Joined: May 2013
Posts: 365
Likes: 19
From: Hugo MN
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
