I've been using Quaker State in my cars and trucks since I was 16. My current ride has a half million kilometres on it and runs like new. I've heard comments about the downside of Quaker State but obviously have yet to experience them. I've also heard how bad Fram filters are. I use them too.
I've been using QS 10W30 in my 235 for 10 years however a mechanic friend says it would be better with straight weight.
