Has anyone tried PowerFoam made by AMSOIL? I did several months ago and this stuff works great at cleaning out deposits and overall giving your engine a good internal cleaning.
I removed my spark plugs to check the gap on them several weeks ago and the top of the pistons looked brand new. I then removed the intake pipe, opened up the throttle valve and looked at a shiny aluminum intake. I wish I had taken a few pictures because I was stunned at how clean everything was. This stuff seems to work excellent and no I'm not a dealer, although I am an avid user of their products.