Awl --
I recently became aware that fuel injector cleaner is basically kerosene..... !! It's also clear that alcohol is freely mixible in gasoline. In fact,
So the Q is: what can one "dump" into one's gastank, and how much, without gumming up the works? Including all these catalytic converters. Mebbe it's better to dump stuff in, say, the lawnmower??
And what do I mean by "stuff"? Unknown mixes of 2-stroke gas, kerosene, paint thinner, small amounts of old oil, any combustible really. You can put quite a bit of fuel injector cleaner (kerosene) in a gasoline car, on the order of a pint to just a few gallons of gas, and the car runs fine. But I'm not talking about a deluge of stuff, just a cup here, a cup there in a full-ish tank?