I am trying to flush out the tank on Starduster that has sat for 30 years. Its got some nasty brown gunk in the tank. One A/P says its Mogas residue but other folks say the aircraft never say Mogas. So far gas, paint thinner, brake cleaner, lacquer thinner, PrepSol, acetone, xylene, soap and water, dont cut it. Its gooey and soft, but not sticky. One pic shows what you get if you scrape some out.
Was wondering if it might be a tank sealant application. Or any other ideas welcomed.
Thx, Chris
Was wondering if it might be a tank sealant application. Or any other ideas welcomed.
Thx, Chris
