Super Moderator Eco-Logistical
Yup.I live here in good ole St. Paul, MN. I put 5w-40 like you recommended, that oil coming out was blacker than night!!! I changed the rear axle fluid and gasket because i wanted to clean the magnet. That oil was also pretty bad!
I'm going to the the Transfer case and ran across this thread, have you sen or heard about this?
It says it better to run 5w-30 motor oil in the transfer case than the atf, any thoughts?
Black oil is the norm when running the soot producing beasts we drive.
The kit from amsoil with oil and bypass filter will help that a lot.