Anybody ever used MPT engine treatment?, What do you think of it? Options

[dbgriffith75]

I came into some free samples of it and before I just start dumping it in my vehicles, I was wondering if anybody here has used it and what you thought of it? I don't want to put any potential junk additives in my cars.

[charliew]

I had a nice 94 mazda mpv from my wife after I got her a new honda and I adopted it for a driver. V6 auto, ac, got about 25 mpg and would run 85 all day long. It had a 90 degree opening rear side door that was great for loading and unloading big coolers, etc. I put that ptfe crap in it and it developed a random any lifter noise at stop lights. I always used mobil 1 and really took good care of it maintenance wise. The fix was to remove all the rockers and clean out the little hyd lifters. I just traded it in on a 2000 harley truck. I had put that stuff in everything including my lawn mower and that seems to be the only time it bit me but to be safe I'll never use any additative again.