I just changed the rear transmission oil and now the engine light is coming on. I took a short ride and nothing was wrong; no loss of power, immediate throttle response, etc. Near the end of my ride when I hit the throttle there was a noticeable loss of power and a slip/jerk before fully engaging. I put the recommended amount of Polaris AGL fluid in the rear tranny case, but I did notice a little seeping out of the fill hole near the end of filling. Could this ounce many two shy of the recommended cause this? If the light is on, is my ATV like a car in that a service location can hook a computer up to diagnose the issue? Maybe my belt is just bad as it's about two years old...