Lonesome7.3
CSA
I never heard of an oil T-stat. That is pretty cool. Expensive, but cool. I have a lock clutch as well for my power Stroke (if I ever get around to finishing it.) I agree with you on a mechanical fan moving more air. And if this truck had a slush box, I would not consider it. But I figured with a five speed it might work out. Honestly, I have no idea. I have never installed an electric fan on a diesel.