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a horror story RE: Evans Coolant - S4 Back in Service,
I too have experienced the same problems,
The results (damages)of converting to Evans are:
6 gallons of Evans coolant
1 water pump
1 timing belt (if you put in a water pump, might as well do the rest)
1 timing belt tensioner
1 after run coolant pump
1 heater core
1 pressure cap (Vanagon type)
There might be a few more odds and ends but I can't remember them now...
The car (5K turbo Q, 2 bar boost), experienced overeating problems from the
first day of converting to Evans, numerous attempts to get in contact with
one of the list members that has performed the conversion failed.
If anybody cares to know more technical details of the conversion let me
My conclusion is that the Audi water pump (in the configuration that we have
in our turbos) can not pump the thick Evans coolant, my Audi contact (Mike
at Inglostat West) confirmed the theory by describing similar symptoms when
100% coolant (the regular water base) is used.
From: email@example.com [mailto:firstname.lastname@example.org]
On Behalf Of Lawrence Bardfeld
Sent: Thursday, December 24, 1998 10:50 AM
To: 'Quattro List'
Subject: Evans Coolant - S4 Back in Service
Just in time for the new snow here (Philly), I've got my car back, the
Evans coolant flushed out and replaced by conventional water-based
coolant. My mechanic, who had previously used Evans successfully in a
variety of Audis, thinks that perhaps due to its higher viscosity and
the S4's cooling system the two were just incompatible (resulting in
my 2 turbo coolant pump meltdowns in 2 days). My question: what might
be different (thinner tubing?) in the cooling system of a car such as
mine ('93 S4) that might account for the difference (compared, e.g.,
to a 5000)?
And a merry Christmas (and thanks) to all!