Changed the oil and went with MPT 30k brand 100% synthetic this last change. I have used this ATV for a dozen years now for plowing my driveway. I can count on the cooling fan to come on after about 15 minutes of use. I have used mostly Can Am branded oil over the years and it has never varied, fan ones on after about 15 minutes in all temperatures. The last few times I have plowed the fan hasn't come on until I am nearly finished, about an hour. Is it possible that the oil could make that much difference? Typically I use the Can Am kit with oil,filter and O ring. This time I bought the filter and o ring online and utilized 3.5 quarts of the MPT I had purchased for car that I no longer own, so I used it on the 4 wheeler. Any thoughts?
Last edited by sloinker; 02/28/20 10:52 PM.