I'd say stay away from the non-detergent. Sludge happens with it. I use Mobil 1 10-30 but they make at least 6 types of it and that can be confusing.

Last edited by Wally / Montana; 02/22/2018 4:33 PM.

1948 3/4-Ton 5-Window Flatbed Chevrolet

34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.