Was having trouble with my wood splitter. Kept blowing fluid lines while splitting wood. Kept replacing lines (expensive) and kept putting hydro fluid in. The heat was just too much for lines. I bought the thinniest fluid I could find to help lubricate and keep heat down. Still no results. Discussed with local Amsoil dealer and he called the Amsoil tech rep to discuss. They recommended I use Amsoil ATF fluid!! I was dumb founded. So I tried and guess what? No more problems!!! Apparently the ATF can withstand the heat being generated by splitter and keep viscosity in range. Anyways, no more blown hoses and splitter working fine. FYI!!!