Repair & Maintenance Clean rust gas tank September 29, 2015 Read a lot on how to clean a gas tank water, vinegar, gas with bolts and nuts and shake it like hell. I can’t imagine water in a gas tank is a good thing. I emptied the old gas, removed the petcock, thinking bolts and gas is the way to go Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related