Best coolant for our 60-70's Mopars?

As for the no pressure, Evans says this on their site, but then says "Cooling system pressure is greatly reduced as illustrated in the video below." So they are helping to spread this zero pressure info..... does not help, IMO.

2 Darts said

If I read the information correctly, the Evans product requires replacement every five (5) years.

Click to expand...

If you can find a reference to this, I would appreciate it; I have had no luck in finding any life info on Evans coolant. Evans is a glycol mix so may well have a breakdown mechanism with heat or other things and thus a practical life limit; I have read that ethylene glycol breaks down very quickly when exposed to lots of air for example. Of course, if you don't drive a car very often and don't race it, that life may be a looong time.

Here is some analysis from a company that in some ways may be an indirect competitor to Evans. It is interesting technically, but I would take some of the results as not nessecarrily typical results (like for engine temp elevation). I would read this for general info and looking at the principles of what will happen (like the fact that a 375 degree Boiling point fluid WILL boil in hot spots), and with a grain of salt on the exact numbers.

http://www.norosion.com/evanstest.htm