Sorry if its a common question, I searched and came back with mostly T-56 related threads not ones pertaning to the 4l60e. what ATF should I buy for my swap? Its all stock far as i know and I don't know what was previously used, we did'nt take the trans apart. Whats the best stuff to use?

 

Nice Ride Dude!

Use a Dexron III compatible fluid.

I prefer to use Royal Purple if I am installing a synthetic fluid.

g

 

Thanks man, She's been mine for about 3 years, can't wait to get it running. So far I havent heard good things about synthetic, does it really cause more wear? whats the advantage to synthetic?

 

Synthetic does not cause more wear... or at least I've never heard of it.

The one thing I have noticed is that the fluid I mentioned appears to provide for a cooler running tranny. By as much as 7-10 deg., in my experience.

g