I use Valvoline Max Life. I figured that would be one of the choices because I know a lot of people that use Valvoline.

 

Pennzoil and QS and Wally world supertech are the same.
Yall should take a look at Rotella T
www.rotella.com

 

Rotella T is what my local dealership recommends. Most of the construction companies around here run it in their equipment. Supposedly it's great stuff. They make in in a 10w-30, but not a 5W-20. So the guys with new Hemi's can't use that particular brand.

 

im partial to royal purple....

 

I use Mobil 1 Syn. for all my vehicles.

 

Vavoline,, one of the oldest oil makers.. and one of the few that actually do all their oil testing "in-house".. but its one of the more expensive brands.. i got vavoline in every fluid receiving device on the ram and it runs stupendous

 

Castrol GTX high mileage 5w-30 or 10w-30, the motor runs great on this stuff. Valvoline it hated, it run sluggish.