[vector1]

i use the evans in my ford diesel truck with a 210 deg thermostat, and used it in my aluminum engine i built. have seen no problems. the aluminum engine did get pretty warm at gateway, over 210 deg, but i wasn't running a lot of compression either.

the stuff does absorb water, which makes it less effective, i've read anyway.

in the case of the truck, i can leave the radiator cap off and the heat will boil the water off, i can see the steam. but you don't want any water in the system if you change over, i used it from the start in the aluminum engine so didn't have to mess with that end of the deal.

the stuff is slick also, and some tracks won't let you use it, and you definitely wouldn't want to experience a bad leak on track. but, you can run unpressurized, so the chance of blowing a gasket or hose is minimal.