rear end fluid

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Gbarrie

Master Mechanic
Sep 15, 2012
286
1
16
which rearend fluid are you guys using? Who make' the best quality product?
car in question 1986 GP, After 32 yrs I think its time for a change. What is the precidure
in changing it? Any help would be appreciated.
Gbarrie.
 
get a diff gasket and regular gear oil for a driver; no need to reinvent the wheel. take the cover off and let it drain. scrape off the old gasket and install with the new gasket. take the plug out of the side of the diff and fill until the fluid reaches the bottom of the hole
 
Peter said:
get a diff gasket and regular gear oil for a driver; no need to reinvent the wheel. take the cover off and let it drain. scrape off the old gasket and install with the new gasket. take the plug out of the side of the diff and fill until the fluid reaches the bottom of the hole
Thanks Pete, I hope it go's that smooth, First timer.
Gbarrie.
 
before you even break the nuts loose on the cover. try and take the fill plug out!!!! cause if its stuck or rounded out there is a problem just waiting for you. and i just did it on my 84 GP and i used walmarts super Tech 75W-90 Syn-Blend Gear Oil
 
TODoubleD said:
before you even break the nuts loose on the cover. try and take the fill plug out!!!! cause if its stuck or rounded out there is a problem just waiting for you.
Ok, that will be the first thing I do :!: thanks for helping me avoid this problem 😀
Gbarrie.
 
TODoubleD said:
before you even break the nuts loose on the cover. try and take the fill plug out!!!! cause if its stuck or rounded out there is a problem just waiting for you. and i just did it on my 84 GP and i used walmarts super Tech 75W-90 Syn-Blend Gear Oil


Just had he same problem, It didn't even try to turn it out before it slipped. I had to drill a hole in my plug and use a very large easy out. If you have access to a welder you could also weld a short bolt into the plug and turn it out whild still hot.
 
86 Grand prix said:
TODoubleD said:
before you even break the nuts loose on the cover. try and take the fill plug out!!!! cause if its stuck or rounded out there is a problem just waiting for you. and i just did it on my 84 GP and i used walmarts super Tech 75W-90 Syn-Blend Gear Oil


Just had he same problem, It didn't even try to turn it out before it slipped. I had to drill a hole in my plug and use a very large easy out. If you have access to a welder you could also weld a short bolt into the plug and turn it out whild still hot.
Man 86GP that sucks, Thanks for the heads up.
Gbarrie
 
Gbarrie said:
Doe's lucas make differentral fluid :?:
Gbarrie.
Yep
 
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