Funny question, but which oils are bright red? I ask because I bought a very high mileage Polaris 850 that still has full compression (factory PSI numbers). The oil in the reservoir is bright red. I'm not saying that the engine is in good condition because of the oil selection, but obviously this oil works in this sled. I'm curious what it is. I think Ski-Doo oil is red... what else could it be?