Originally Posted by nis350

curious to see how the thinner oil effect the oil temp. it will flow better and may even disperse the heat better? I got this quote from the Mobil site regarding the M1 Synthetic oil: "Mobil 1 advanced synthetic motor oil provides outstanding high-temperature performance and is proven to protect at engine temperatures up to 500°F"

I suppose the most important factor is how well the oil lubricate the engine.