[Vwdiesel] Thermostat temps

[R West]

Good points and I'm in general agreement, but having changed out the heater
core (plastic junk) on my 91 air conditioned Jetta, I'm going to give Evans
serious consideration for this vehicle, since it is my road/trip car! The
pressure cap was ok (though always subject to suspicion) but the plastic
core just had one too many temp/pressure cycles and popped. This is a pretty
well known weakness in A2's that VW took a lot of justified crap over.
Anyone that's ever done this change out can attest that it is a major pain
that they would doubtful like to repeat. Probably leave my Caddy's alone
since they are only driven locally. Also, they have the old style brass
heater cores that I've never had a problem with! Regards

 -----Original Message-----
From: 	vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]  On
Behalf Of James Hansen
Sent:	Thursday, February 01, 2007 12:36 AM
To:	vwdiesel at vwfans.com
Subject:	Re: [Vwdiesel] Thermostat temps

Evans coolant along with synthetic oil make a great combo to save a
> hot engine. I'm not sure how long I have been running Evans but it must be
> at least 5 years. They make a lot of performance claims and even if they
are
> wrong you still need to run Evans Coolant.
>

There is a very good reason that our stock car rules mandate water only
in the rad.  The waterless coolants provide a HUGE advantage over water
based coolants in high performance situations.  That said, I've never
ran it in my highway stuff... In my lifetime I have had coolant issues
four  times.
1.  lost the block heater going up the big hill to Flagstaff in an 82 Jetta.
2. popped a rad hose sitting idling on the concrete pad parked out in
front of my shop (no kidding) on the high mile 89 jetta. (top hose failed)
3. lost a rad hose in a combine- fan blade erosion in an un-inspectable
spot.
4. had intermittent heating in the 89 jetta when I got it.  Turned out
to be a soft lower rad hose collapsing under higher engine speeds
causing the water pump to pull a higher vacuum than the soft old hose
was capable of withstanding.  wound a spring out of stainless tig wire,
problem solved until I changed  the hose out a year later.

that's it.
I can't persuade myself to run Evans coolant because not one of these
issues would have been prevented by it's use... maybe item #2 due to no
pressure, but the failures were all mechanical in nature, and should
have been caught by me on inspection.

Let me run it in the stock car, now you have something.  That's a
perfect application for it- I can come in off the track at 240 with a
heat soaked engine, and smile, because it's no big deal.
-james
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