I am not a big fan of any type of auto "additives". But, I happen to come across with this one,

http://www.prestone.com/products/coo...Treatments.php

Does this really work?
They even claimed that it can remove "heavy" rust & scale as well as any oily deposit etc etc. Wow!!!

If it is really true, shouldn't this be a big helper for "blown gasket" or coolant & tranny oil mixture incidents. Or even can be included as a regular maintenance item?

Any opinions?