I normally use straight 30 weight VR-1, but it is warmer here (for more of the year) than it is in some places. Jerry's correct about the idiot light and that's why I said I wouldn't lose any sleep. Plus I've heard since I was a teenager 10 psi per 1000 rpm is appropriate. I don't know if that is true, but it has been easy to remember so I've always used it as a guide. My 235 by the way is about 25 psi at warmed up idle, but that's with a new (Melling) pump and I had them grind the crank to get bearing clearances of .0015" and the cam bearings were new.
