I picked up an SM318 3-speed transmission yesterday and want to clean it up both outside and inside before I install it. After I drain it, would there be any harm in filling it with either diesel or gasoline, slosh it around, and then drain it? I’d like it to be as clean as possible before I refill it with clean transmission oil. Thanks


Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod