The BT-50 has been overheating since I started towing with it. The radiator was blocked and replaced, but it still overheated. Ir was getting worse until it finally would;t go 5 minutes without overheating. Despite many visits to the mechanics, it was not solved. Finally went to a new mechanic and traced it down to the head gasket. Replaced it, and all good now. Go to our BT-50 page for more information.