I know what i'm talkin about.
I would suggest you real aliitle too.
The number have nothing to do with oil weight. Those numbers are the SAE standard for oils viscostiy. 0W-30 is darn near water and has little to no protection during startup. You are correct that the first number is for 0degF and the second is for operating temp(212F). I would suggest going back to the 5w catagory while your connecting rods still have a journal. Your operating temp is still the SAE 30 rating and you have nothing to gain by putting in a 0W oil. I meant to say that you get more HP all around rather than a cold engine. The lower SAE 20 rating allows the oil to be thinner without sacrificing viscosity during startup. It allows the oil to breakdown at a lower temp but my engine doesn't get that high anyway.
