[200q20v] Evans Coolant NPG+

[Brett Dikeman]

The Big Baby is overdue for a coolant change, and with winter
approaching, figured now was the time to do it.  I also noticed one
day that the gurgling noise coming from the engine has returned.
Grrrr.

Well, I'm wandering around the net using Google, checking into Evans
yet again, but everything points to the stuff being just too thick.
S-cars can't use the stuff at all, supposedly the pre-C4 cars have
big enough passageways in the radiator.  Still, it's not
confidence-inspiring that Evans recommends new radiators+pumps with
the NPG.  Ah, no.

Well, lo and behold, Evans has come out with a new version, NPG+.

 From the website(evanscooling.com):

"A blend of non-aqueous ingredients, NPG+ retains all of the benefits
of Evans original NPG coolant, while improving upon its thermal
conductivity by about 32 percent and reducing its viscosity by about
65 percent. It is perfectly suited for the demands of any hard
working engine, and there are no plumbing or pump changes needed to
use this coolant."

Any thoughts?  I remember a few listers spoke vehemently against
using NPG, and I -think- it was because of the viscosity problem.
Well, if they've fixed that, is it worth a go?

Oh...and I nearly fainted at the price.  Quantities up to 3 gallons,
$25/gal.  That's some pricey coolant.  It will last the lifetime of
the car, and one of the toted benefits is a zero-pressure system that
supposedly makes heater cores etc last longer; if it prevents a
heater core meltdown, it could easily pay for itself.

Thoughts? Opinions?  Experiences(with the NPG+ that is)?

B
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