Had 3 Ski Doos and one Pro in the trailer last year. The Pro smokes badly why it is warming up. Had to get it out of the trailer quick or it was like the trailer was on fire. The Doos could sit and idle and NO smoke at all. Any one know why? Also, the Pro used a tiny amount of oil. One gallon in 500 miles. I bought 3 gallons with the sled, used one all year.