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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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Jul 21st, 2025 | | | | Joined: Nov 2017 Posts: 26 'Bolter | | 'Bolter Joined: Nov 2017 Posts: 26 | I would like to replace the transmission fluid and differential fluid in my original 1954 Chevy 3100 3 speed pickup but would like some recommendations on what time of fluid to use.
For the transmission I am planning on using Traveller all mineral SAE 90 Ford tractor transmission fluid. I understand it is Ford but the manual says SAE 90 All mineral fluid and that was all I could find.
I also replaced the U-Joint in the torque tube, not sure if i should fill the ball housing with general purpose gear lube or transmission fluid?
For the rear diff I am planning on using standard 80-90 gear oil.
Thanks for the help in advance. | | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | | | | | | Joined: Nov 2017 Posts: 26 'Bolter | | 'Bolter Joined: Nov 2017 Posts: 26 | What would you recommend for the ball housing? Whichever I decide to put in the transmission? | | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | same fluid/oil - that oil is "shared" by/between the transmission and u-joint housing. | | | | | Joined: Nov 2017 Posts: 26 'Bolter | | 'Bolter Joined: Nov 2017 Posts: 26 | Got it, thanks. Just wanted to make sure before I changed all the fluids. I appreciate the help. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The rear end grease needs to be GL-5 qualified.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jan 2002 Posts: 2,696 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,696 | Yup!
I use Valvoline High Perf 80W-90 gear oil which is GL-5 qualified.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
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