It's been a while, but heres proof I'm still alive.

[Ironclad Alibi]

I did a quick Google search on "transmission fluid in gas tank". Apparently it is supposed to act as an engine cleaner.

[wolfie]

I did a quick Google search on "transmission fluid in gas tank". Apparently it is supposed to act as an engine cleaner.

A variant of that (back in the days of mechanically-controlled engines built to far looser tolerances than is now the case) was adding transmission fluid to diesel fuel to lubricate the injectors.

One good reason to NOT put transmission fluid in your fuel (gas or diesel) is that it's red. Marked fuel (agricultural fuel, reefer fuel, home heating oil, etc.) is dyed red to indicate that it has not had road taxes paid on it. If you're found with red fuel in your tank (or in your fuel filter - the dye stains the filter medium, so one tankfull will leave its mark until you change the filter) you're looking at a VERY large fine.

[SongsOfDragons]

One good reason to NOT put transmission fluid in your fuel (gas or diesel) is that it's red. Marked fuel (agricultural fuel, reefer fuel, home heating oil, etc.) is dyed red to indicate that it has not had road taxes paid on it. If you're found with red fuel in your tank (or in your fuel filter - the dye stains the filter medium, so one tankfull will leave its mark until you change the filter) you're looking at a VERY large fine.

I heard that during the War all petrol was dyed red, because it came heavily under Britain's rationing laws. You could only get it if you had a reason. However some clever wag found that pouring the petrol through a standard gas mask filter removed the dye...