I'll have to try and dig it up, I swear it used to be on the MSDS. I know the old MSDS said Castrol but it looks as if they have taken off all manufacturers names from the MSDS's. I would say the Redline Snowmobile oils is the equivalent, being it's "low ash", but the rest of the specs are gray on their site (redline), not to mention the Redline is more expensive as per their website. I would have to agree, dollars and cents is what drove the change. Not sure what about the price hike?? I never noticed a difference. My local dealer charges $52.99 a gallon, but will honor their website prices of $44.99 a gallon. I used to buy online a case at a time, now that they will give me that price I just go to them and let them hold my inventory and buy it by the gallon. I'll say I've never strayed from their oil, even in my sleds. All my XP and Speedster saw this year was the red stuff.