TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Tractor Talk Discussion Forum

OT rear axle oil

Welcome Guest, Log in or Register

Author

Randy

01-17-2004 18:04:22

Report to Moderator

Folks: How much oil does a G.M. 10 bolt axle hold? Also, does a posi differential need a special additive, and what is it? Do I get it at a G.M. dealer? What is the best way to change the oil? I want to change it because I bought it used, but don't know how much oil I need. Thanks. Sorry for the off topic post.

[Log in to Reply] [No Email]

buickanddeere

01-18-2004 04:53:25

Report to Moderator

Re: OT rear axle oil in reply to Randy, 01-17-2004 18:04:22

Any premium quality synthetic, Mobile 1 and Amsoil are the best. Pays for it's self on Plain Jane vehicles too. It doesn't turn into thick goo in cool weather and cause extra drag, reducing mileage. If one is looking at locking diffs, the Detroit Locker works pretty good. There is a worm gear limited slip unit used in the Hummer that works even better. Can't think of the name at the moment.

[Log in to Reply] [No Email]

MarkB

01-18-2004 03:52:54

Report to Moderator

Re: OT rear axle oil in reply to Randy, 01-17-2004 18:04:22

Although you can probably get by with just straight 80W-90, it's cheap insurance to add a friction modifier. You can use the generic stuff from the auto parts store or go to the dealer. The rear end specialist where bought my Auburn posi unit recommended the Ford additive for all brands of limited slip differentials.

I notice that the manual for my 2002 Trailblazer recommends synthetic gear oil with no additives.

More important than the additive is to change the oil regularly. The gear oil in a conventional differential is good for 100,000 miles. Not so in a posi.

Two quarts of oil will fill your differential. Pick up a gasket while you're at the store.

[Log in to Reply] [No Email]

marlowe

01-17-2004 19:48:06

Report to Moderator

Re: OT rear axle oil in reply to Randy, 01-17-2004 18:04:22

it will depend on the year just put a new used posi. in a 95 chev called dealer and ser. manager looked it up and it said 80-90 check with a good dealer some years use better stuff

[Log in to Reply] [No Email]

Jay

01-17-2004 19:33:40

Report to Moderator

Re: OT rear axle oil in reply to Randy, 01-17-2004 18:04:22

Maybe someone else knows the right answer with this info, but I don't.

What I need to tell you is the year/make/model, anything special related to drive train, and anything about drive train you can tell me.

Chances are unless it's something special, year make and model will tell me what I need to tell you the right answer.

[Log in to Reply] [No Email]

Randy

01-17-2004 19:57:55

Report to Moderator

Re: Re: OT rear axle oil in reply to Jay , 01-17-2004 19:33:40

It's a 1980 Firebird positrac axle, remounted into 1947 Mercury pickup with a hot 302 V8 and auto tranny. I will likely drive it hard.

[Log in to Reply] [No Email]

Jay

01-18-2004 08:45:30

Report to Moderator

Re: Re: Re: OT rear axle oil in reply to Randy, 01-17-2004 19:57:55

My book only goes back as far as '82 so this might not be accurate for you. But in '82 both the conventional and the limit-slip differentials called for 80w or 80w90.

If you are going to use it hard, I would recommend a 75w90 synthetic. If you haven't replaced your seals, you will likely have to if you switch.

If I remember tomorrow, I will call the hotline and double check this recommendation.

[Log in to Reply] [No Email]

Unimog

01-17-2004 19:32:22

Report to Moderator

Re: OT rear axle oil in reply to Randy, 01-17-2004 18:04:22

Not much info, but most GM rear diffs take about
3.5 pints of lube. Best way to change oil is to
remove the rear cover, drain and replace gasket.
Posi rear takes special lube available from GM
dealer. Most new posi lube is synthetic and works
much better then the old dino lube.

[Log in to Reply] [No Email]

wdTom

01-18-2004 17:55:25

Report to Moderator

Re: Re: OT rear axle oil in reply to Unimog, 01-17-2004 19:32:22

If I have to remove the cover on any rear end to change the oil I look and find a place for a 1/8" NPT and never have to remove the cover again. A small thread like that cam be put almost anywhere. With the cover off you can clean out the chips easy. I have done a couple by putting grease on the drill and tap, and fishing for chips with a magnet after.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy