They have sythetics for trucks...Ive heard nuthin but good stories from relatives that work on Off shore rigs and few folks I know run the 10w-30 in there chevy HDs...has anyone used it in their rams?

 

We use schaeffer's of the farm. In everything. we also use some of their soy shield in some of the equipment. Have nothing but wonderful things to say about it. They dont have 5-20 or i would. I am currently using amsoil

Shaeffers' is great oil though, i also wonder who is using it.