What oil does a 1990 Honda fourtrax 300 4x4 use?

A 1990 Honda FourTrax 300 4x4 typically uses 10W-40 or 10W-30 motor oil, depending on the climate and operating conditions. It's essential to use a high-quality oil that meets the API service classification, ideally JASO MA for wet clutch compatibility. Always check the owner's manual for specific recommendations and to ensure proper maintenance.