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Old 06-02-2017, 09:03 AM   #3
Oz
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Join Date: Oct 2003
Location: Jersey, Channel Islands
Posts: 4,060
Subframe: Other
CC: 1595
Make: Honda
ECU: DTA
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I seem to remember a debate on an FB forum over this, a guy swore by the stuff and a few mechanics were trying to warn him off but he wasn't having any of it. I remember the argument about it being flammable. A quick search brought this up. Some interesting points about it's greater viscosity affecting the water pump efficiency and higher temps at the head recorded. Admittedly it seems to have been a test undertaken by a company that makes cooling additives so there is possibly some over emphasising of bad points.

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

Quote:
SUMMARY OF FINDINGS

Conversion costs of $259 if you do it yourself, or over $400 if you pay a shop to do it.

97%+ removal of all previous coolant is mandatory in order to prevent corrosion.

Inhibitor deposition occurs on aluminum surfaces, which could cause issues in some radiators.

Engines run 115-140oF hotter (at the cylinder heads) with Evans products.

Stabilized coolant temps are increased by 31-48oF, versus straight water with No-Rosion.

Reprogramming ECU fan temp settings is mandatory to prevent the fan from running continuously.

Specific heat capacity of Evans waterless products ranges from 0.64 to 0.68, or about half that of water.

Engine octane requirement is increased by 5-7 numbers.

Computerized ignition must retard engine timing by 8-10o to prevent trace knock.

Engine horsepower is reduced by 4-5%.

Accelerated recession of non-hardened valve seats in older engines is possible, due to brinelling.

Viscosity is 3-4 times higher than what OEM water pumps are rated to accommodate.

Coolant flow rate through radiator tubes is reduced by 20-25% due to the higher viscosity.

Race tracks prohibit Evans products because they are flammable and slippery when spilled.
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Last edited by Oz; 06-02-2017 at 09:59 AM.
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