I have a 1973 Chevy truck with the NP205 gear driven transfer case. My original 1973 manual says to fill it with 80w gear oil. Later manuals for the same transfer case specify ATF instead, I'm guessing this was for gas mileage reasons. The newer 205 transfer case that calls for ATF is the same as far as I know to the old one that I have.
I'd like to switch my TC to synthetic ATF for mileage reasons...but do you think I should? Is ATF going to provide enough protection? I believe it should...but I don't want to be buying a new transfer case either....
I've asked this question on Chevy forums and got both answers...
I'd like to switch my TC to synthetic ATF for mileage reasons...but do you think I should? Is ATF going to provide enough protection? I believe it should...but I don't want to be buying a new transfer case either....
I've asked this question on Chevy forums and got both answers...