I run full sythetic 0w50 in my lawn mower.
uke: stay with motorcraftNot a fox, but Motorcraft. Might be switching over to Pennzoil though.
no...I used Royal purble the last time on my car, but its a bit higher on price and I didnt notice any diffrence from mobil oil. I think I'm just going to switch back to mobil. Oh also i guess since im switching back I should flush the oil out right?