That is what I use
gear and diff oils
Thread Starter
Team Owner
Joined: Nov 2004
Posts: 20,708
Likes: 25
From: Sorrento Italy
gear and diff oils
hi, would you advice as gear (T-10 manual 4 speeds trans) oil the castrol 75/90 fully sintetic and same lube but 90 sintetic for the diff? the seller claims i won't need any additive, that this diff oil is already ready for use streight away...what do you think? thanks/Giuseppe
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Originally Posted by panic
hi, would you advice as gear (T-10 manual 4 speeds trans) oil the castrol 75/90 fully sintetic and same lube but 90 sintetic for the diff? the seller claims i won't need any additive, that this diff oil is already ready for use streight away...what do you think? thanks/Giuseppe
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
I think any 30 weight synthetic engine oil is fine for a stick shift tranny, of any vintage...I put it into my Muncie some years ago and drove it for about 2-3 years, it smoothed out the shifting something wonderful.....
I have heard of oils light as ATF in differentials...not sure about the posi thing though.....frankly some posi additive and a load of 30 weight synthetic engine oil is what I"d use, and intend to use next time I have that diff out....
GENE
I have heard of oils light as ATF in differentials...not sure about the posi thing though.....frankly some posi additive and a load of 30 weight synthetic engine oil is what I"d use, and intend to use next time I have that diff out....
GENE
Thread Starter
Team Owner
Joined: Nov 2004
Posts: 20,708
Likes: 25
From: Sorrento Italy
thanks for the infos, but what is the use of the additives on the differential? why a simple diff oil won't do? just a curiosity...actually i cant easily find this GM additives where i live at the moment...that's why i was looking for an alternative..
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Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Originally Posted by PEPTO77
What is the best way to get the old diff fluid out and the new fluid in?