Rear Differential Fluid
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 1,009
Likes: 62
From: Houston Tx
Rear Differential Fluid
Hello everyone, does anyone have a recommended (brand/weight) rear differential fluid for a 76 Corvette? Also, any suggestions for an indoor stroage facility that's reasonable priced in the Houston Texas area? Thanks.
Burning Brakes
Joined: Dec 2007
Posts: 889
Likes: 0
I was told that you always use the GM additive regardless?!!? The shop that rebuilt my diff last week used Royal Purple + GM additive. My diff still leaks on my garage floor after replacing all the seals though
Le Mans Master
Joined: Jan 2006
Posts: 6,505
Likes: 139
From: Butler Pa
I've owned my car for over 30 years, replaced the diff fluid 4-5 times and never used anything except Pennzoil GL-5 gear lube. Never any GM additive and have never had an issue.
Drifting
Joined: May 2006
Posts: 1,480
Likes: 2
From: Circleville Ohio
Vader Vette
Did some work on mine and re-placed everything including A new gasket next day same leak frontish of the punkin .took it all back apart to clean up and re-seal while spraying some cleaner, it got down on my feet some how After closer looking the Manufacture had drilled and tapped two of the cover hooes rigth out the back filled em with permatex liquid sealer no leak going on five Yrs. look real close under your punkin i did and it payed off . found the small leak.
Burning Brakes
Joined: Dec 2007
Posts: 889
Likes: 0
Does your leak? I should have seen the BS flag waving when the pushy service guy at the shop told me that GM additive was required. Then he started telling me that I should replace my half shafts because they were likely going to be found to be bad while the U-joints and input & output pinion seals were replaced. My first quick thought was that they had a spare set left over and saw an easy way to move them. Also had new rubber bushings, adj strut rods and some odds and ends done.
910 dollars later my diff still leaks. Rear end feels more solid now - but it will feel more stable when they get around to aligning it
They also sliced thru both brand new exhaust pipes and when they welded them back up, the passenger side pipe hangs a good inch lower that the drivers side and the muffler hangs lower and just overall, looks like crap. Yes - they are going to fix it.
910 dollars later my diff still leaks. Rear end feels more solid now - but it will feel more stable when they get around to aligning it
They also sliced thru both brand new exhaust pipes and when they welded them back up, the passenger side pipe hangs a good inch lower that the drivers side and the muffler hangs lower and just overall, looks like crap. Yes - they are going to fix it.Corvette Stories
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Drifting
Joined: May 2006
Posts: 1,480
Likes: 2
From: Circleville Ohio
Vader Vette
The clutches will love it. JMO
