Mobil 1 5w/40 Users.....

[1medic]

If you use Mobil 1 5w/40 and use an extended oil change interval (over 7500) and use OA's or not I want to hear your story about what your experience is.

 

[BIG JOE]

Not a Mobil 1 user but.. WELCOME TO SDD.. anyway ?

 

[no-red 6 0]

used mobil 1, but 15w40. went extended on it and had it blackstone tested, no issues

 

[Crumm]

I use Mobil 1 5w/40 but I change it every 5000 miles. I am not a fan of extended oil change intervals. I figure if I am good to my engine it will be good to me I run the 5w/40 for cold weather performance.

to the site

 

[shhorn68]

I am using the Mobil 1 15W50 for the first time in my F350. So far no issues. I use full synthetics (Mobil 1 10W30) in my wife and daughter's gas trucks and so far they both have over 220000 miles with no issues. I have never had the oil tested though...