I have used Quaker State 10W30 in all my vehicles since I was a teen including my 49 half ton. Always worked for me although my trusted mechanic says 10W30 is basically generic oil and I should use something else. I had a by-pass filter on my 49 but removed it as I change oil every 1000 miles and even then it seems clean.


1949 Chevy 1/2-Ton
"Sedgewick"
In the Gallery
1989 Caprice