INFERNY

I have a 2001 Z28 with ~40,500 miles and a stock 10-bolt. To the best of my knowledge I am going to assume that my rear differential oil was never changed by the previous owner. I know that when you change the rear diff oil, you need a gasket. However which kind of gasket is better: RTV silicon or a Fel Pro gasket? Or does it even matter??




PS: I have never changed my rear diff fluid before; this will be my first time. I just want to have everything ready for when I do change it

01ssreda4

iTrader: (96)

I like the rubber gasket with a slight smear of Ultra Black RTV on each side. Tighten, wait a while, and re tighten. It wont leak, ever.

blk99camaro

iTrader: (9)

lube locker gasket all the way. A little pricey, but 100% worth it. Yes it is re-usable and never had one leak. no issues with sticking gasket pieces or silicone to scrape off.

topless2002SS

Part number on that lubelocker gasket is?

blk99camaro

iTrader: (9)

I'm going to have to eat my words on that one. I have one for my 9", and have used them in dana axles, just assumed they made a 10 -bolt version, but they only make an 8.5" version according to their website.

Snake_Skinner

iTrader: (12)

I bought a gasket and used it and then leaked. Bought rtv and no leak.

INFERNY

When you had the leak, did you use just the gasket by itself??

Greekey

iTrader: (3)

Always use both! Extra insurance.

98CayenneT/A

Lots of people don't use gaskets.
Use black rtv, finger tight and let set for half hour then tighten down, good to go.

Greekey

iTrader: (3)

Well this for a 9”! Sorry, I’m looking for lube locker for 10bolt!

Snake_Skinner

iTrader: (12)

probably yeah.

AnotherWs6

iTrader: (17)

Black RTV made for rear ends. Put a bead along the cover, let it sit for a while, install hand tight, wait some more then tighten. No gasket needed.

topless2002SS

I use the black RTV

INFERNY

I mean I guess I could use both just to be safe...

By the way, did you guys have any trouble removing the diff cover with the sway bar in the way? I took a quick look underneath today and the sway bar looks like it could get really annoying while changing the gear oil.

pdxmotorhead

I added a drain plug to the housings on my jeep, way less mess.. on my Dana axles I use a sheet of card stock and peen a gasket off the housing, then use Oil rated permatex red silicone. Drain the diffs twice a year if I'm wheeling it, pull the cover about once a year unless it ends up submerged in mud.. almost 300 K on the axles and no issues.

Guuseppe'sTA

The drain plug cover is defenitly a nice option like the TA cover

erickk120

What I don't get is if the entire oil gets drained or just most of it. I bought one of the cheap one from O'reilly since mine was old and had a leak. What are your experiences with them draining the oil?