90DegreesSouth

Hello Morgan, One added benefit of EWC is that, unlike traditional antifreeze/coolant, it is not poison for children and animals. If you are having to capture leakage of coolant, Evans is a safer way to go. There are references of EWC having a higher viscosity than water. My experience is that it is "wetter" than water. Once I converted to using it I had two small leaks appear; one around the temperature sensor and another at the drain tap in the block. They were small leaks, 8-10 drops a day, but may have added up to something like yours over a 7 month period. Happily, they were easy fixes.

I started using Evans Waterless Coolant (EWC) in my 1959 Austin-Healey 3000 about 400 miles ago. Operating temperatures have been normal, mostly around 180-190 degrees, which is ideal for that configuration of the BMC C-Type 3 liter engine. I did get two small leaks of approx. 8-10 drips per day from two places. The first was the water temperature sensor at the block; this was remedied using yellow, fuel-rated, thread tape. The other drip came from the brass, coolant drain tap in the side of the engine block; I simply used a brass plug (also used thread sealing tape) rather than risk a new tap leaking as well. It is possible that some small bit of debris from draining my system kept the tap from closing completely. These were minor leaks and easily fixed, but do demonstrate that EWC can escape when traditional coolant does not. I, too, was a little put off by the claims on the EWC website, but watching an episode of Jay Leno's Garage gave me the nudge I needed to give it a try. He was polishing the aluminum water plate on one of his Duesenbergs when his fingers poked two holes in it; the coolant had corroded this thick plate from the inside out. There may be one or two exceptions, but Jay now uses EWC in all of the older cars in his collection. More info here: