I just received, as a gift, a 1983 Suzuki GS750ES which was parked in a garage in 1988 with half a tank (2+ gallons) of gas in it. The bike is in as-new condition except for the sludge and rust in the tank. I poured it out. The gas had turned to about 1 gallon of thick gelatinous yellow shellac. I rinsed the tank with a garden hose. The entire surface inside the tank is covered with rust. I :confused: removed the petcock and sending unit and filled the tank with 1 part molasses to 8 parts water. I'd heard of this at work, and did a Google search for "molasses rust removal". I'm leaving it in there till Saturday morning. I'll post the results here.
