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#1421941 Thu Aug 26 2021 12:55 PM
Joined: Dec 2020
Posts: 26
Rmcea Offline OP
Can someone tell me what fluid is used on my 1950 gmc standard transmission

Last edited by Rmcea; Thu Aug 26 2021 12:55 PM.
Joined: Feb 2020
Posts: 47
90 wt gear lube

51 GMC 100 with 59 chevy 261 under the hood.
3 on the floor with 3.42 gear.
Joined: Apr 2005
Posts: 11,613
“Grease Monkey” “Former herder of cats”
Farm Supply Store will have what you need.

'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”

"I fought the law and the law won" now I are a retired one!
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USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)

Joined: Feb 2019
Posts: 3,602
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Tractor supply has Ford Tractor Transmission Oil, a 90 wt mineral oil which is the factory specs. Not all stores have it in stock and is hard to search for on their web site.

Here is a link:

Last edited by Phak1; Thu Aug 26 2021 04:08 PM.

Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100
Project Journals
Stovebolt Gallery Forum

‘59 235 w/hydraulic lifters
“Three on the Tree” & 4:11 torque tube
Updated to: 12v w/alternator, HEI & PCV
Joined: Jul 2000
Posts: 2,043
I don't believe that there is a Tractor Supply Store in London Ontario or anywhere else in Canada.

1954 1/2 ton 235 4 speed
Joined: Jul 2008
Posts: 188
Phak1 suggestion is what I just used in my 52 chevy 1/2 ton. Non foaming, noncorrosive to yellow metals and not too slippery for synchronizers. It also quietened it down some.

1952 Chevy Pickup Truck
In the Stovebolt Gallery
Joined: Oct 2018
Posts: 109
I use 75-90 synthetic.

Joined: Mar 2004
Posts: 6,201
Originally Posted by msmall
I use 75-90 synthetic.

What brand did you use and what is it's GL number?

Mike B smile

Mike Boteler

1956 Chevy 3100 Resto Rod []
1956 8400 Wrecker w/Holmes 525 []
1956 9200 Tractor w/Allison Automatic []
1952 Willys M38 Army Jeep
1953 Willys M38A1 Fire Jeep
1978 CJ-5 Navy Jeep
Hughesville, MD
Joined: Dec 2020
Posts: 26
Rmcea Offline OP
Thank you

Joined: May 2015
Posts: 8,077
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Originally Posted by Gord&Fran
I don't believe that there is a Tractor Supply Store in London Ontario or anywhere else in Canada.
Try Canadian Tire. They're about the same as Tractor Supply.

Newest Project - 51 Chevy 3100 work truck. Photos []
#2 - '29 Ford pickup restored from the ground up.
First car '29 Ford Special Coupe
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
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