Just wanted to say that I almost found out the hard way what a strong solvent fuel power seems to be. It could be my imagination but I put some in an Amsoil PI bottle that was empty and clean, thinking wow what a perfect bottle to store it in. The bottle fits in my door compartment and has a long neck to reach inside my fuel cap without spilling. Well it was in there for a week and when I went to get more for the next fill up the bottle was really soft. Now remember this is the same HARD plastic #3 bottle a week ago and now it was as soft as ever. I almost could put my finger through it. Good thing I caught it in time. The Gallon Fuel Power came in is a #2 plastic so I am using the bottle that was sent with the gallon for easy measurements. Live and learn.