GRM Evans coolant test?

What ever happened to the Evans coolant test that GRM was supposed to do on that Mustang?

I second the motion...

Did that a few years ago. I'll dig out the back issue, but the basic conclusion was that the stuff works good, but there are some considerations. First, you have to get ALL the water out of your cooling system, and second you have to check the rulebook carefully if you intend to race with it as some sanctioning bodies specify water only in cooling systems.

But as a cooling medium, the Evans stuff is darn good.

jg

Getting all the water out is a simple as running for a while without a radiator cap. The water will boil off.

I've heard of guys buying the normal premixed propylene glycol antifreeze and letting the car idle with the cap off, until the steam stops coming out of the radiator cap, achieving an "Evan's like" condition. Other prep work was involved, like removal of the T-stat, but they claim it works?

Thoughts?

Jack

JG Pasterjak,

Are you talking about the demo using the skillet?

I'm asking about their planned testing of the car. I never saw it.

You could boil the water out of propylene glycol in "Sierra" by just simmering it on the stove in a pot, right? Got to be some test to determine the level of water (like maybe a thermometer reading higher than 100 C at atmospheric). It would have to be pretty darn similar to Evans at that point, as the Sierra would still have anti-corrosives and lubricants or whatever else they might add. Unless those boil off too. I just wonder what the yield of a gallon of Sierra would be. Is it already 50/50? I dunno.

Answer to my own question...

The "I work with propylene glycol and I see what it does" argument-- Can you use plain propylene glycol (PPG), or Sierra coolant, instead? No. If you run straight PPG or Sierra coolant in your engine, it will gradually break down into a nasty goo that will really mess things up. Those who object to using PPG in an engine are talking about this. One of Evans' patents is on their inhibiting system that prevents this breakdown. And apparently it doesn't gradually go bad like the inhibitors in regular antifreeze. Evans has engines running over 300,000 miles on this stuff with no coolant change. The only objection I have to it is that their pretty purple coloring turns brown in just a few miles. I'd like to see them come up with a color that doesn't change. But if that's the only problem, who cares?

from this site: http://will.mylanders.com/mc/notes/read.pl?file=64

I don't know what kind of authority this guy is on the subject, but I guess I could buy the reasoning. But I wonder why running Sierra sans water would let it break down while its fine with water.

I've talked with guys who indicated they were running the propylene glycol with the cap off until the steaming stops, with no issues. I don't see why this would not work, but am reluctant to try it on my own car, hence the need for a GRM car to try it on.

Volunteers???

Jack

I tried it in my 66 Bonneville with a Caddy 500. (The Evans stuff, that is) Unfortunately I only drove the car 23 miles to the body shop before tearing it apart for a restoration. Its now in a 5-gallon bucket.

But it did great for 23 miles :)

No inputs from the GRM staff? Don't they post in here?

Besides the initial experimentation, the most extensive "testing" we did was basically using the stuff in the car. The big benefit I see from a system like this would really come in very high-hp applications where detonation due to spot boiling or cavitation is an issue. The increased boiling point should really help there.

The fella who bought out Mustang ran it extensively at track days with no cooling problems whatsoever. He eventually had to remove the fluid due to a track rules change which required water in the cooling systems.

Were you thinking of switching? What kind of car?

jg

Miata or other 4 cylinder with an aftermarket turbo.

So would the claim of reduced detonation be valid?