We changed the 4 speed transmission's lube in Dad's **** to Amsoil many years ago. What a difference!!!
In the real cold, which Northern Minnesota tends to get, you could still push the truck around by hand, where the old stuff got so solid yo could hardly move it at all. It was hard starting out before the change, but much easier after. I can't help but think the mileage is better.
We're approaching 20 years later now, and my brother is still beating on the truck. Not bad for a late 70's **** .
