Hi, my daughter put the wrong oil in her 2008 90 sportsman atv. This is what I use in my truck, bit is it ok for her 4 wheeler? Should I change the oil now? If so what oil should I use as far as weight in conventional oil goes?
She put in AMS 5W-30 Heavy duty diesel for gas and diesel engines.
She put in AMS 5W-30 Heavy duty diesel for gas and diesel engines.

