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Rear end fluid

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Old Nov 13, 2002 | 07:32 PM
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Default Rear end fluid
What is the proper way to change fluid in rear end. Also what is proper fluid to put back in?? :confused: :confused: :chevy :seeya
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Old Nov 13, 2002 | 07:34 PM
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Default Re: Rear end fluid (John D.)
I plan too do this this winter
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Old Nov 13, 2002 | 07:52 PM
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Default Re: Rear end fluid (John D.)
I just did mine a couple of months ago. I took the fill plug out and used a suction gun to extract the old fluid out, and it worked very well. I used Castrol synthetic 75w80 gear oil for the refill. I checked with Castrols tech dept before I put the synthetic oil in the rear, they said it would be good for the rear but not for the 4 speed trans. In the trans it need the heavier old to slow the gears down for shifting. Good luck.
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Old Nov 13, 2002 | 08:30 PM
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Default Re: Rear end fluid (John D.)
I got an electric oil pump from JC Whitney. It really made to sucking out and pouring in easy. You will a little less than 2 32oz. bottles of gear oil, but put the little bottle of limited slip additive first, then top off with the gear oil.
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Old Nov 14, 2002 | 06:41 AM
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Default Re: Rear end fluid (71,454,4spd)
A suction pump, thought I was missing something with no drain plug on it.
Has anyone drilled and taped it for a drain plug?
I did that to my TR-6 and it made job a snap. :chevy :flag
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Old Nov 14, 2002 | 08:22 AM
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Default Re: Rear end fluid (John D.)
Ditto with the suction pump, did mine about 6 months ago, went back with all GM fluids, don't forget the posi lube.
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Old Nov 14, 2002 | 09:24 AM
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Default Re: Rear end fluid (1LE)
did mine about 6 months ago, went back with all GM fluids, don't forget the posi lube.
I did mine when I put in my 3:73 gears...But before that i also used the suction method......Damn that stuff Stinks :cry
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Old Nov 14, 2002 | 06:56 PM
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Default Re: Rear end fluid (Alwyn678)
Why can't they make these service items easy to do. A little drain plug would make job easy and also allow one to change more often. :chevy :seeya
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Old Nov 15, 2002 | 05:52 AM
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Default Re: Rear end fluid (John D.)
I got the Redline posi fluid and later, my mechanic told me that the GM posi fluid is the best to use...what's been your experience?
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Old Nov 15, 2002 | 02:20 PM
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Default Re: Rear end fluid (John D.)
You will need 2 of part# 1052271 and 1 of part# 1052358. hope this helps! :smash:
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