The thing with the truck was, an old race engine got converted to street duty. Boone would complain about killing the oil on Drag Week, saying that when it ran over 240 oil temp for a period of time, it would start to burn it, and then oil pressure would drop fifteen to twenty lbs.

He always ran Valvoline VR-1 50wt. in it.

When I got the truck down here in Phoenix, I added a plate cooler that was 2 inches longer than the previous one, and switched to Lucas Classic 20-50wt.

Even though I have seen oil temps in the 240-250 range, I've never experienced pressure drop (solid 65lbs.) or burning, so I'm going to chalk it up to better oil choice.

It's not ideal, but sometimes you just use what you have.