I don’t have any input on ATF. But I did get a free lawn mower with 4 flats that would barley take any air from my 12v inflator and certainly couldn’t mow on 1 air up. I Dump about 1 quart of green tire slim into each tire and now they all hold air for a few days. It even bubbles out of the dry rot cracks on occasion. Just my $0.02