I'm positive it's a NP535. My truck as far as I know was originally a V6 3.9 but when I got it somebody put a 318 in it. And now I just put a 360 in it. So I had the trans out putting a new flywheel and clutch in it.
Need a little help. This might be a stretch but I've got a 90 Ram with the NP535 trans in it. What I would like to know is what type of fluid that it takes. Is it a gear lube if so what weight or is it an engine oil if so what type?