Originally Posted by xjrev10

I run amsoil diesel and marine blend. 15w 40. Seems to work pretty good. My oil pressure shoots up right away after starting. I hae been thinking about switching to Rotella Synthetic just so I dont have to keep ordering oil when I need a change. Where I live, we get 30 below often in the winter. I have actually started my truck in 47 below temps.

The reason I quoted your post is im curious what you run in your pickup?