52 Ford F1 239 Gear oil
 

I'm looking to change the transmission, rear end and steering box oil. What should i use? Valvoline 85/140 for all three or do each take a different product?

Re: 52 Ford F1 239 Gear oil
 

Here’s what I use in my 39 coupe and 52 F1. Available on Amazon. For both but tranny make sure it’s GL4. Steering I use John Deere cornhead grease

Re: 52 Ford F1 239 Gear oil
 

Kinda depends on what you want to do, GL4 will work in both the transmission and rear axle. Or you can use GL4 in the transmission and GL5 in the rear axle. The steering box depends on how prone it is to leaking. If it is a leaker, Cornhead lube is a good option (JD).