i see zmax engine treatment in the stores and in commercials. does it really work and help reduce wear on your engine?

just buy a high quality oil and leave it at that, that stuff might do something, but i dont think its worth the price

z max is a good product and i now it works, i had a 91
camaro w/ 3.1 liter v6. it had a lifter that was knocking
bad. i changed the oil and put the z max tratment kit in.
drove around at cruise speeds for 10 minutes. stopped
and the knock was gone, even after i changed the
oil 2500 miles later. it never came back, car also felt
like it gained more power. but i dont know what it
would do for a toyota, i know im not putting it in
my tacoma unless i have a problem. but if you
are consider using it, it can only prolong
the life of your engine. and it has a 150,000 mile
deal if you use it and it damages your engine they
and its got under 150,000 miles they are liable.
my camaro had 250,000+ it was on its last leg,
I was very surprised at how it run afterwards.
I put 60,000 on it after that and then traded it
for a 1990 rallysport camaro with a v8 and a 5spd trans.