Thread: Evans Coolant

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Hard to believe I built my v8 Miata 20 years ago, but damn time flies. I've been running 100% Evans coolant since the start. Last week my water pump gasket failed so I replaced the pump and decided to replace the coolant with water and regular antifreeze because I have always had trouble with cooling. I also noticed early on that there was some weeping of coolant from the gaskets making me think Evans permeates the gaskets . It won't boil but it will get hot. Took it for a drive today (it's crazy hot here right now, was 97 when I went to bed last night) with the AC running and it never went over 190, that has never happened. My results are not scientific because I can't compare with the same parameters but I know I won't be going back to Evans. Also when it leaks out it's a mess, it looks like dirty thin oil. Anyone else here use it and what did you think?
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We used to have a member in here that worked for them, he swore by the stuff. Most of us I guess are to old and cranky to try all the latest whiz bang gee haa sh_tuff and I don't remember exactly but the conversations weren't good ones. He refused to listen to basic physics so I wrote him and his product off.

He hasn't come back that I've seen. I don't believe he was building or had built a car.. he just wanted to be a salesman and push a product I think. I was thinking back in the spring that it's time for me to replace the coolant in the rod... been a dozen years I think! LOL.

I've not used Evans coolant, or any other "super coolant" products. I've always subscribed to the idea that if you NEED anything other than water & ethylene-glycol antifreeze you need to improve the cooling system - volume of coolant; speed of circulation, allowing resident time to remove heat; air flow; air flow; air flow. A well designed & installed system doesn't need "trick stuff", IMO.

What sold me was 1. It never needs to be replaced. 2. It has a super high boiling point so even at high temps you don't get steam hot spots. The down side is it doesn't cool as well as water. I had built an v8 S10 that would boil the water out so I think that it sounded appealing at the time. Maybe it would be OK if your cooling system was overly efficient and you could afford the loss of efficiency. Just thought I would throw my experience out there in case anyone was pondering it.

I think Roger summed it up well. A few years back I almost tried it (still have 2 gallons and a gallon of flush unopened), but decided it was better to use the old standard and change it every other year. I think I made the right choice, anyone looking for some Evans cheap..

I thought about it for my Studebaker but glad I decided not to. The appealing thing for a hot rod is the cooling system won't rust while it sits, but if it doesn't cool who cares.

My friend Roger tried it in a drag car, didn't seem to cool better enough to justify the extra expense and all the extra mess when you had to open up the cooling system. I'm with Mr. Spears on this, use good components sized correctly to the demands of the engine!