i repaired the oil tank on my speedster. bottom mount hole leaked. propane torch-VERY BRIEF on tank. mebbe 1 to 2 seconds at a time. then you use filler plastic. the plastic you use is old milk jug. it is the same stuff. high density polyethelyne. HDPE. before you try; price the oil tank new. my (girlfriends son's-it's really only mine when it breaks) speedster oil tank was around $75. be ready to spend the price if you mess up and melt it. but to pay someone else to repair it would probly be more than it is worth compared to a new one. our oil tank is starting it's second year of use with the repair, so if you get lucky and hit it right it isn't a short-term fix. any glue you put on it IS a very short-term repair. good luck.