I believe that is NPG, not NPG+ which has a lower viscosity (check the specs).old_biker said:I am a car mech and have used Evan's in one car only. Will not use it ever again. It is thicker than regular anti freeze/water mix and does not flow as well. In this particular car, there was a thermostat bypass channel and all the coolant was bypassing instead of flowing through the engine. The engine overheated. This happened several times while locating problem. The overheating scored the rear (Straight 6) two cylinders. After repairing engine, used regular coolant and no further problem.
Check-out the Evans online site. I believe that you compromise the benefit of higher boiling point and corrosion protection if you leave any significant amount of water in the system. I forget just how much is significant though.Nando said:Evan users
What would happen if I just empty the OEM and refill with Evan...NOT doing the flushing thing...how bad is that?