Ford 4speed fluid.

Just put a clutch in buddies 63' Galaxie. 390 4-speed car. Went to top off trans with gear oil but it looked like ATF was in it. What should be used? Thanks

 

Gear oil in a Toploader or a T-10...

 

Chysler used ATF in their manual trans cars for a few years during the '60s

 

use ONLY good old 90 wt. Dont let anyone talk You into using synthetic or shifting troubles will occur. The syncros dont like synthethic and it finds its way outside somehow?? Read leak. David Kee reccomends just 90 wt in all His toploaders. FEDER

 

390 4 speed car, if it's original should be a Top Loader - the bad ass 4 speed trans. 90wt is the proper gear oil for these.