I know it is not good to run gas in any quantity mixed with diesel, but is there a way to modify the gas by adding some ingredient? I have a can of about 7.5 gallons of fuel, about 2 gallons is gas. Is it all ruined, or can I do something to it to use it safely? I suppose I could add it 1 cup at a time as I make fill ups, but that would take a long time and I want to use it or chuck it. I also have a lot of clean turbine oil to use as an additive, if that will help.