Rear differential additive
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 3,198
Likes: 0
From: Clarkesville GA
Rear differential additive
I had the rear diff. fixed for the second time today. This time they replace the plate hopefully will fix the leak for good. I asked if they added the positraction additive and he said that it did not call for it.
I was under the impression it needed to be in there. Is there a service bulletin somewhere or something I can tell this guy. Or do I not need to worry about it at all?
I was under the impression it needed to be in there. Is there a service bulletin somewhere or something I can tell this guy. Or do I not need to worry about it at all?
Safety Car
Joined: Apr 2002
Posts: 4,101
Likes: 3
From: Vandalay Industries
Just from what I recently researched it seems with Mobil 1 or GM fluid you definitely need it (4 oz. with drain & fill). With Amsoil and Red Line, only use after the fact if you have chatter.
Le Mans Master
Joined: Jul 2002
Posts: 7,076
Likes: 26
From: Nevada and Florida
Originally Posted by cortex
Just from what I recently researched it seems with Mobil 1 or GM fluid you definitely need it (4 oz. with drain & fill). With Amsoil and Red Line, only use after the fact if you have chatter.
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
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Aug 2001
Posts: 3,050
Likes: 124
From: Wichita KS
Originally Posted by 1 BAD C5
I had the rear diff. fixed for the second time today. This time they replace the plate hopefully will fix the leak for good. I asked if they added the positraction additive and he said that it did not call for it.
I was under the impression it needed to be in there. Is there a service bulletin somewhere or something I can tell this guy. Or do I not need to worry about it at all?
I was under the impression it needed to be in there. Is there a service bulletin somewhere or something I can tell this guy. Or do I not need to worry about it at all?
The Service Manual calls for the additive. Why would you not use a lubricant required by the manufacturer? (Especially when the additive is inexpensive.)
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
Originally Posted by mapman
The Service Manual calls for the additive. Why would you not use a lubricant required by the manufacturer? (Especially when the additive is inexpensive.)
I wouldn't use it if the diff was already working properly.
Melting Slicks
Joined: Aug 2001
Posts: 3,050
Likes: 124
From: Wichita KS
Originally Posted by mapman
The Service Manual calls for the additive. Why would you not use a lubricant required by the manufacturer? (Especially when the additive is inexpensive.)
Using the correct lubricants is how you KEEP it working properly. Properly maintain your car - Do the next guy who will own your car a favor.
The Service Manual calls for the additive. Why would you not use a lubricant required by the manufacturer? (Especially when the additive is inexpensive.)
Originally Posted by leaftye
I wouldn't use it if the diff was already working properly.
Using the correct lubricants is how you KEEP it working properly. Properly maintain your car - Do the next guy who will own your car a favor.
