The Ford Barn

SoCal32 · 09-15-2023, 01:41 AM

What seems to work the best?

drfromnc · 09-15-2023, 08:14 AM

One of the early Ford transmission specialists, Van Pelt sales, recommended to me Sta-lube 140 or 75w90 depending on which one you can find. My local NAPA was able to order mine. I went with 140. I have no experience with it yet. I am sure you will get more options or recommendations from those with real experience.

mcgarrett · 09-15-2023, 09:25 AM

Very important to use 85-140 GL4 gear lube. Be sure it has the API rating of "GL4". The additive package in the GL4 lube does not attack the bronze bushings or synchronizers.

Fritz · 09-15-2023, 02:03 PM

Sta-Lube 85-90 ordered from NAPA. It’s GL-4 and works great for me.

Wow, I just checked the price. $78 for a gallon. I guess fossil fuel inflation has caught up to their products.

mrtexas · 09-15-2023, 02:37 PM

Quote:

Originally Posted by Fritz

Sta-Lube 85-90 ordered from NAPA. It’s GL-4 and works great for me.

Wow, I just checked the price. $78 for a gallon. I guess fossil fuel inflation has caught up to their products.

Crude oil is around $2/gallon

19Fordy · 09-15-2023, 02:59 PM

Sponsored Links (Register now to hide all advertisements)

I use this in my 1940 transmission.
https://www.oreillyauto.com/detail/c...40?q=gl4&pos=1

glennpm · 09-17-2023, 06:54 AM

Quote:

Originally Posted by 19Fordy

I use this in my 1940 transmission.
https://www.oreillyauto.com/detail/c...40?q=gl4&pos=1

X2

Glenn

09-15-2023, 01:41 AM	#1
SoCal32 Member Join Date: Apr 2018 Location: Southern California Posts: 51	Best Gear Oil for '39 Trans? What seems to work the best?

09-15-2023, 08:14 AM	#2
drfromnc Senior Member Join Date: Oct 2017 Location: Smithfield, NC Posts: 259	Re: Best Gear Oil for '39 Trans? One of the early Ford transmission specialists, Van Pelt sales, recommended to me Sta-lube 140 or 75w90 depending on which one you can find. My local NAPA was able to order mine. I went with 140. I have no experience with it yet. I am sure you will get more options or recommendations from those with real experience.

09-15-2023, 09:25 AM	#3
mcgarrett Senior Member Join Date: Dec 2013 Location: Waxahachie, Texas Posts: 949	Re: Best Gear Oil for '39 Trans? Very important to use 85-140 GL4 gear lube. Be sure it has the API rating of "GL4". The additive package in the GL4 lube does not attack the bronze bushings or synchronizers.

09-15-2023, 02:03 PM	#4
Fritz Senior Member Join Date: May 2010 Location: From Chicago. Now Nashville Posts: 207	Re: Best Gear Oil for '39 Trans? Sta-Lube 85-90 ordered from NAPA. It’s GL-4 and works great for me. Wow, I just checked the price. $78 for a gallon. I guess fossil fuel inflation has caught up to their products. __________________ Cars and metal rust away and are destroyed, but the Word of God will stand forever (Isaiah 40:8, Matthew 24:35).

09-15-2023, 02:59 PM	#6
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,950	Re: Best Gear Oil for '39 Trans? Sponsored Links (Register now to hide all advertisements) I use this in my 1940 transmission. https://www.oreillyauto.com/detail/c...40?q=gl4&pos=1