My old engine ran with the needle between the r and m, but my new engine now runs with the needle just barely touching the "n" in normal. Sometimes it doesn't even get to that. I do know that it only gets about 22mpg running cooler with the 0-30 mobile 1 tri-synthetic. Before the new oil, it ran between the o and r in normal, and got 28mpg. But hey, after spending $3100 for the engine replacement, I can live with lower mpg.