I used to take baths in MEK back in the '70's and '80's. LOL At work. Before we use any new product. We have to find out if it has MEK and a couple of other chemicals in it. If it does, we can't use it.
Using gasoline ain't going to hurt it. Anything left behind will be absorb by the tranny fluid or gear lube. As it is almost the same chemical make-up.