I'm in the process of changing the oil in my cr 250 and my brother's xr80r and I'm not quite sure how much oil the 80 needs. It's a 2000 but it has the older looking plastics, and I couldn't find a manual specifically for the 2000 model just for the 97 and 03 models. Problem is, in the 97 manual it says to use 0.7 quarts but in the 03 one it says to use 1 whole quart so I'm guessing there's some change in the engine design between those years. Could anyone tell me how to identify which engine I have and how much oil I should use for it? Any help would be appreciated.