Liquid Gold?


I am working on a retro install of a
6.1L/545RFE into a ’68 Charger. I was wondering
if you have had any experience with
the Evans waterless coolant? From what
I’ve read, it does a better job of cooling,
doesn’t build up any pressure or oxidation
in the system, making it more user friendly
to the hoses, radiator and block. It seems
to me it would also eliminate adding an
overflow jug to an already full engine compartment.
It is expensive but this project
has been way over the top of my budget
already so I guess a couple hundred more
won’t be the end of the world. You haven’t
led me down the wrong path in the past so
I needed to check with Boss Mopar.

The stuff is simply pure propylene glycol.
I found only one scientific-sounding
test of it (vs. standard 50/50 coolant
mixes) online, here’s a synopsis:
• Conversion costs of several hundred
• 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.
• Specific heat capacity of Evans waterless
products ranges from 0.64 to 0.68,
or about half that of water. (In other
words, it is much less efficient than
water at removing heat). Vs. straight
water, engines run 115-140 deg. F. hotter
(at the cylinder heads) and stabilized
coolant temps are increased by 31-48
deg. F. with Evans coolant. As a result:
• Reprogramming electric fan controls is
mandatory to prevent the fan from running
• Engine octane requirement is increased
by 5-7 numbers.
• Ignition must retard timing by 8-10
deg. to prevent trace knock (Assuming
no change in fuel octane). Therefore,
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
• Race tracks prohibit Evans products
because they are flammable (!) and
slippery when spilled. (As with virtually
any antifreeze, although Evans is even
Enough said. Me? Sticking with 50/50.

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