There has been a lot of discussion on this. Some of the early models recommended 90 Gear oil. Most all now say use ATF. If it is a world class it is a must. I have put ATF in all mine for the last several years & it has worked good.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum