Thanks!!

I did change the gear oil in my 66 c30 tow truck after a while when I realized they probably drained the trans and pumped back in a mixture of GL5 and GL4 when they rebuilt the PTO and the wrecker shop.


1960 Chevy Apache (C10)
1965 Chevy C30 Dump Truck
1966 Chevy C30 Tow Truck