Originally Posted by Bluestream
Ashless oil is for engines that have ample cooling supply, like an outboard. Snowmobiles run hot due to their load factor. Neither BRP, Polaris, Cat or Yamaha call for an ashless oil. In fact Sea-Doo watercraft switched to low ash oil for their 2 strokes, due the RAVE valve design that puts out more power and runs hotter
Anecdotally, and yes, this is a boutique manufacturer, but RP specifically recommends against using their TCW3 oil in snowmobiles. They don't talk about ash, but rather cold weather use. Of course in this province, dedicated two stroke snowmobile oils are fairly ubiquitous.
Ashless oil is for engines that have ample cooling supply, like an outboard. Snowmobiles run hot due to their load factor. Neither BRP, Polaris, Cat or Yamaha call for an ashless oil. In fact Sea-Doo watercraft switched to low ash oil for their 2 strokes, due the RAVE valve design that puts out more power and runs hotter
Anecdotally, and yes, this is a boutique manufacturer, but RP specifically recommends against using their TCW3 oil in snowmobiles. They don't talk about ash, but rather cold weather use. Of course in this province, dedicated two stroke snowmobile oils are fairly ubiquitous.