600w vs 90w
I live in Fairbanks Alaska. It gets so cold here in the winter that even in modern vehicles have difficulty moving.
My question is: Is it absolutely necessary to use 600w oil in my transmission and rear end on my Model A? In the cold here, 600w turns to solid tar and your vehicle will not move. Try finding 600w at NAPA...
Is there a reason I can't use 90w?
|