Differential Fluid
Thread Starter
Cruising
Joined: Feb 2008
Posts: 10
Likes: 0
Differential Fluid
Have a question about differential fluid. I've seen some discussion on here about which to use, and it seems a lot of people like the Royal Purple. So I picked some up tonight, but haven't put it in yet.
My question is, do you still need to add a limited slip additive with it? It says on the bottle that it is mixed with a limited slip additive, and wasn't sure whether to add more or not. Thanks
My question is, do you still need to add a limited slip additive with it? It says on the bottle that it is mixed with a limited slip additive, and wasn't sure whether to add more or not. Thanks
Drifting
Joined: Apr 2004
Posts: 1,886
Likes: 20
From: Olathe, Kansas
Have a question about differential fluid. I've seen some discussion on here about which to use, and it seems a lot of people like the Royal Purple. So I picked some up tonight, but haven't put it in yet.
My question is, do you still need to add a limited slip additive with it? It says on the bottle that it is mixed with a limited slip additive, and wasn't sure whether to add more or not. Thanks
My question is, do you still need to add a limited slip additive with it? It says on the bottle that it is mixed with a limited slip additive, and wasn't sure whether to add more or not. Thanks
I just changed mine using the Redline fluid that has the additive already in it. I did not add any additional, and it's running great. Put in the RP straight out of the bottle. You can always add the extra additive later if it chatters.
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
If you got the Royal Purple Max Gear,,you are good to go it has it in there already.It's been a while , but I think it says so on the bottle.I've had mine in there for about 4,000 mi and three trips to the strip and just came back from an 1,100 mi trip and smooth and quiet as new!!
Team Owner
Joined: May 2001
Posts: 87,302
Likes: 1,583
From: Western NY
I agree...I've had RedLine in my '01 for many years. Works good!
Be careful, however. RedLine makes TWO diff oils. One is for limited slip units, the other is for open diffs. Make sure you get the right one.
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
He already HAS the R.P. and it dose have the additive in it and it works fine.
Le Mans Master
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
I changed last weekend RP max gear 75W90 No additional additive needed. Drove may be 100 miles sofar with no problem. But if i were u i would go Redline NS with GM additive. I dont see any problem with RP but it looked thin and purplish color.
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
It may look funny ,,but IT SURE WORKS GOOD!! I've put 4000 miles PLUS 13 dyno pulls 3 test and tune nights(16 passes) and 2 trips (one was 1,100 miles with mountains.The rest was daily driving of city/suburban type driving. Thousands of racers wouldn't use it if it didn't work! R.P. has earned their rep!!
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
