...changed how often? max. mileage? Any recommendation? How often should the oil be changed and maintenance? What is considered a high mileage for a used dirt bike? For example, a 100k for a car is pretty high, except for Honda.
If you are a beginner I would not recommend a 250. However, if you have your mind set on getting one, a crf 250 and kx 250f are great bikes. Your manual will tell you all about oil changes.
