I must really be nuts. East-coaster, horse farm owner, run CQ/Valvoline 15-40 in everything except my tractor and mowers. 4cyl Dodge, 6 cyl Chrysler, 6 cyl Hyundai, V8 Mopars have all run 15-40 since getting under my maintenance. Cheaper by the gallon...lol.
yeah, I ran that first, needed a little more pressure . will go back to it in colder temps. My favorite used to be phillups 66 , 20w40, I ran it in my new 68 - 383 S- barracuda as a kid, worked well yr round.
