Thinking of running it this winter, for the cold start - ups. Have been using M1 5W - 30 SS and no problems. '02 FX4 Reg. Cab only has 8K on her. Just looking to keep my 5.4L "happy".....anyone using the M1 0W - 30 SS?

stay safe

 

I'm not running it, but would not hesitate to use it year round.

I currently use Amsoil 0w30 for the last 3 years with great results. Both hot and cold.