Join Date: Aug 2007
Location: The Last Best Place
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I have 15W40 in mine right now. I'm new to diesels and not to thrilled about how difficult it is to start in winter. Have you run a diesel additive/injector cleaner recently? It might help. If I can get my oil leak fixed, I'll probably put 10W30 or maybe 5W30 in it, although I'm a little leary of going below 10W30. A friend of mine from Minnesota has had Fords over the years and never changed from 15W40 even at 40 below so I'm wondering if it's a 6.0 thing. Good luck.
2004 F-350 Lariat Crew Cab 4x4 Long Bed 6-spd
Ranch Hand grill guard, Gooseneck hitch, EGR blockoff.