Hey Scotty,

We just bought a 2005 Lincoln Aviator with a little over 143,000 miles. Truck is in good shape and runs great, looks great and got a great deal on it. Anyways, I want to do an oil change but torn between high mileage oil vs full synthetic oil. What do you recommend for this vehicle for a 4.6L V8 AWD w/ a little over 143,000 miles?

FIND what was used in the past and use that. Do not switch from normal to syn oil or vice versa

That’s the problem, the dealer was not able to give me that information which tells me they didn’t do an oil change. I just want to change it just as a precaution but should I use high mileage oil?