Hi,
Running 10W30 or synthetic oil in a flathead is fine Ford says 10W, 20W, or 30W depending on temperature and some guy's said in summer use 20W50
So i guess that i got whit 10w30 for now is in spécial a Canadian tire this week
If any one runing a V8 Flathead could hellp
PS no funny joke for the
Chevy guy (
Ottawa Area)