Changing Rear End Fluid.. Question
10-06-2009, 12:14 AM
#1
Changing Rear End Fluid.. Question Alright, so today I bought some Mobil 1 75w90 rear end fluid.
http://www.mobil.com/USA-English/Lub..._LS_75W-90.asp
^That's it. It says it has limited slip fluid added. So do I still need to go get the GM LSD Additive from the dealer? Or will I be fine with just that stuff.
Advance auto didn't have rear differential gaskets, but I got black RTV. Can I use JUST RTV or do I NEED the gasket? If so, where can I get this gasket?
Any tips for changing the fluid?
Also, my car is really a 99.. ignore my name. What rear end do I have in it?
Thanks guys!
http://www.mobil.com/USA-English/Lub..._LS_75W-90.asp
^That's it. It says it has limited slip fluid added. So do I still need to go get the GM LSD Additive from the dealer? Or will I be fine with just that stuff.
Advance auto didn't have rear differential gaskets, but I got black RTV. Can I use JUST RTV or do I NEED the gasket? If so, where can I get this gasket?
Any tips for changing the fluid?
Also, my car is really a 99.. ignore my name. What rear end do I have in it?
Thanks guys!
10-06-2009, 01:39 AM
#2
if its the stock rear you should have a torsen diff which you dont need the addative but heres a good write on how to tell which posi you have https://ls1tech.com/forums/gears-axl...-what-oil.html and no you dont need a gasket use rtv
10-06-2009, 01:57 AM
#3
Thanks Rob! I guess I'll just put in the mobil 1 fluid and see how it goes. If anything, I can always just add the LSD additive in afterwords. Any advice on getting to the rear? Must be a PITA with how our muffler's are RIGHT there. I guess just jack the car up high? haha
10-06-2009, 08:12 AM
#4
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ideally, you want the car level when you fill it back up. i like to drive the front up on rhino ramps, then put the rear axle on jackstands to get it level. and its a PITA to squeeze those bottles in the rear end sideways... you can never get it all out of the bottle. i got a hand pump from pep-boys... its like the pump top on a soap bottle, but with a hose on it. yeah, its a little slow to pump it in that way, but less chance of making a mess.
10-06-2009, 10:03 PM
#6
Well, I'm done! Got the fluid in and everything seems just normal. It was actually pretty good, no problems, PLENTY of room, and everything inside the rear looked great (not that i would know).
And man, those squeeze tips on the end of the gear oil bottles are useless on our cars. I ended up stealing a pump bottle of my sister's hair crap and filling it with the gear oil LOL. Much easier, but takes a lot longer. Thanks for the help guys.
And man, those squeeze tips on the end of the gear oil bottles are useless on our cars. I ended up stealing a pump bottle of my sister's hair crap and filling it with the gear oil LOL. Much easier, but takes a lot longer. Thanks for the help guys.
