This time of the year, with mud everywhere, I only run it once a week to take a round bale out to the horses. Two weeks ago, the idiot light didn't go off. Last week it came on after a couple minutes. With people getting their tax returns, this is my busiest time of the year for looking at jobs to bid, so I haven't had any time to look at the backhoe. My plan is to find where the hoses go from the filter to the radiator, and divert to the tank. While it might be the idiot light, I have a feeling there is something wrong that is causing this to happen, and it's a real issue.