Originally Posted by gottallovepower

First off this is a boat engine not a car but just relaying the info. A boat mechanic friend hated the stuff because it was so strong that it would knock crap off the gas tank and that stuff would run through the engine causing more problems. Two days before though I saw a guy in the parts store buying it and he swore up and down by it. I guess its just one of those deals where it works great for some people and not so hot for others.

Originally Posted by gottallovepower

A boat mechanic friend hated the stuff because it was so strong that it would knock crap off the gas tank and that stuff would run through the engine causing more problems.

Originally Posted by t/a98

my ls1 blew shortly after I used it... Only 107k miles.