I have just acquired a 100 gal trailer mounted steel fuel tank. I want to use it to bring and store MoGas to/at my private strip (45AR). The tank interior condition, however, is suspect. It has been used for aviation fuel in the past. That has been a number of years ago, however. The tank has set empty since last used. I want to clean it of rust and fuel residue before using it to refuel my L-16. Some good advice would be much appreciated.
Gerald