Differential fluid change?
Thread Starter
Intermediate
Joined: Sep 2003
Posts: 49
Likes: 0
From: Toronto ON
Differential fluid change?
I'm up to 145,000 miles on my 2000, but haven't had my differential fluid changed yet. At this late point, should I change it or am I best to just leave the old fluid in it?
Le Mans Master
Joined: Dec 2005
Posts: 8,582
Likes: 968
From: Communist Colorado
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
Don't leave it... change it....
buy 2 qts quality synthetic gear oil 75W90 and 1 bottle of GM limited slip additive ( or the aftermarket additive)
puit in the additive first and them fill with the gear oil.... you should get about 1.7 qts of the gear oil in
buy 2 qts quality synthetic gear oil 75W90 and 1 bottle of GM limited slip additive ( or the aftermarket additive)
puit in the additive first and them fill with the gear oil.... you should get about 1.7 qts of the gear oil in
Thread Starter
Intermediate
Joined: Sep 2003
Posts: 49
Likes: 0
From: Toronto ON
Thanks for the replies. I questioned whether to change it because I've read that with transmissions if you haven't changed the fluid by 100K, it's better to leave the old fluid in there.
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
One caveat however. Make SURE you know that whichever brand of lube you choose, either DOES or DOES NOT already have the limited slip additive already in it. SOME BRANDS DO. Red Line and Amsoil most notably. Not sure about Royal Purple.
Point being, if a lube already has the limited slip additive premixed in the product, and then you go and add yet another full bottle of additive on top of that, it could easily wind up being entirely too much additive in total and cause excess slippage of the clutch plates, etc.
If in doubt, check it out. Other than that, it's a pretty much straightforward drain/refill deal.
HTH
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
