Evans Coolant

[mr.utility at highstream.net (David Utley)]

It may be a little late for me to offer this, but if you have ANY weak link in 
the cooling system, this stuff will find it.  It works absolutely great, but I 
did push over the edge a crappy water pump, and a hose...  If you have any 
doubts, replace it...  

HTH

David Utley

Quoting "Camron D. Crouse" <camron@worldaccessnet.com>:

> Got some Evans NPG+ "non-aqueous polypropylene glycol coolant" Friday  
> at Pineapple Racing, which is out near the Costco store off of Airport 
> Way in East Portland.  The guys there were super nice, and they said 
> they love the stuff, they use it in all of the race Mazdas they build, 
> as well as their DDs.  These guys were as enthusiatic about rotary 
> Mazdas as we are about Sciroccos.  I bought two gallons, at $25 apiece.  
> Their recommendation is to drain your existing system as much as 
> possible; using a wet shop-vac and compressed air is helpful, as David 
> U. also suggested. Alternately, refill your system with Sierra 
> Antifreeze at 100%, which is similar in composition (aqueous 
> polypropylene glycol) to help rid your system of water, and then drain 
> again and refill with Evans at 100%.
> 
> I found an awesome write-up about using 100% Polypropylene, courtesy of  
> Jan's VW Pages, about two-thirds of the way down 
> http://www.nwlink.com/~vdb/vw/Engine/Anti_Freeze
> Did someone send me this link? Thanks, if so.
> 
> Haven't had the chance to put the new stuff in yet, ~85% Sierra in right 
> now trying to flush all that water out, ya know?  I think I'll have 
> another shot at doing my thermostat and maybe PS pump as well after I 
> get the car back from the frame shop, who will likely be removing the 
> radiator anyways.
> 
> - Camron from Vancouver, WA USA
>      '86.5 Black 16V 2.0L
> 
> 
> > I have found a local vendor and I am going to try this Evans NPG+ 
> > stuff. This week running the car (for a tank of gas' worth) with some 
> > Leave-in Prestone cooling system flush and distilled H2O, hopefully I 
> > can swish the flush out this weekend and complete the refill this 
> > weekend... this vendor (a rotary racing engine specialty shop) 
> > recommends additional "rinsing" and draining of the cooling system 
> > with 100% Sierra antifreeze to displace as much water as possible 
> > immediatly before the Evans install.  Apparently the Sierra is similar 
> > (but not interchangable) to the Evans and helps minimize the amount of 
> > residual water in the system.
> >
> > Here is that shop's sales pitch, I have not yet done business with 
> > them, but they did seem friendly on the phone...
> > http://www.pineappleracing.com/Prod-EvansNPG.html
> >
> > - Camron from Vancouver, WA USA
> >  '86.5 Black 16V 2.0L
> >
> > Dan Smith wrote:
> >
> > I realize we're currently talking about NA high(er) compression cars, 
> > but what about FI cars? Allyn's quote from their website: "Due to the 
> > typical low compression ratios and horsepower of vintage, antique, and 
> > collector cars, NPG can be used in most cases without any 
> > modifications to existing cooling system components." makes me think 
> > that Evans coolant would be perfect to drop into an FI system. With 
> > the added cooling from the combustion chamber, you could concievably 
> > run slightly higher boost due to less knocking. Correct?
> >
> > Dan
> >
> > Mark <mardak@cogeco.ca> wrote:
> > My take on their writeup is that the coolant will run a bit hotter than
> > a traditional 50/50 mix, but that the heat transfer is greater/faster so
> > that localized temperature of the combustion chamber is less.
> >
> > Even though the overall coolant temps are higher (say measured at the
> > rad) I would assume that the combustion chamber itself would run cooler
> > because the Evans coolant "strips" the heat from the head faster than
> > normal coolant. Make any sense? Something like this must be happening
> > since the major advantage (supposedly anyways) of using the Evans
> > coolant is to prevent knock, especially on knock-prone setups (ie: high
> > c/r). Since a higher compression ratio would create even greater
> > localized heat in the combustion chamber this stuff must be carrying
> > that heat away quicker, even though it's heat capacity is less (but I'm
> > no engineer, so that's just my unedu-mac-ated guess on this...) :)
> >
> > I was planning on using this stuff in the future, so someone please help
> > us clear this up - is this stuff all it's cracked up to be?
> >
> > Mark.
> > 75
> > 80 S
> > 81 S 2.0 ABA/JH/4K
> >
> >
> >  
> >
> >> -----Original Message-----
> >> From: scirocco-l-bounces@scirocco.org [mailto:scirocco-l-
> >> bounces@scirocco.org] On Behalf Of Allyn
> >> Sent: March 11, 2004 2:18 PM
> >> To: Daun Yeagley; mr.utility@highstream.net; Julie Macfarlane;
> >>   
> >
> > Cheapass
> >  
> >
> >> Ron Pieper
> >> Cc: scirocco-l@scirocco.org
> >> Subject: Re: Semi O/T: Got a pickup with 2.0 16V, do I need Motronic?
> >>
> >>   
> >>
> >>>> I forgot to mention, I will also have Evans coolant,
> >>>> which should help
> >>>> things...
> >>>>       
> >>>
> >>> Can't help ya there... I think da original Cheapass Ron
> >>> (TM) was going to run something like that - talk to him.
> >>>     
> >>
> >> you know, i was doing some reading up on that evans coolant stuff:
> >> http://www.evanscooling.com/html/tech1.htm#ptbl1
> >>
> >> then i noticed the glaring issue (which i feared): its heat capacity
> >>   
> >
> > sucks
> >  
> >
> >> ass. its like 0.7, which is less than 50/50 water/antifreeze mix
> >>   
> >
> > (0.8).
> >  
> >
> >> heck, i end up keeping the rieger running on like 20/80 mix (0.9) just
> >>   
> >
> > to
> >  
> >
> >> keep temps reasonable. from my own observations/tests the rieger oil
> >>   
> >
> > temp
> >  
> >
> >> runs at 120c constant with a 50/50 mix (compare with 95c constant pure
> >> water). i couldnt imagine running it with this evans stuff. there may
> >>   
> >
> > not
> >  
> >
> >> be
> >> any local boiling in the head, but the overall engine temp would be so
> >> high
> >> that it would be knocking all over the place.
> >>
> >> it may be nice that this stuff basically wont boil in an engine, but i
> >> believe that is outweighed by the high heat output of the vw 16v
> >>   
> >
> > engine,
> >  
> >
> >> and
> >> cant simply be 'dropped in' without some major mods.
> >>
> >> if you look here:
> >> http://www.evanscooling.com/html/tech1.htm#outline2
> >>
> >> you will see that evans sells special coolant pumps and radiators to
> >>   
> >
> > use
> >  
> >
> >> on
> >> modern cars. this is obviously to overcome the low heat capacity of
> >>   
> >
> > their
> >  
> >
> >> coolant. then there is this line at the bottom of that section:
> >>
> >> think back to those cars with tiny engines and huge-ass radiators (not
> >>   
> >
> > our
> >  
> >
> >> case). those are the cars that you can simply drop this evans stuff
> >>   
> >
> > into.
> >  
> >
> > ...so ron, was this the stuff you were gonna use?
> > Al
> >
> >
> > _______________________________________________
> > Scirocco-l mailing list
> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l 
> 
> 
> 
> 
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l
> 



David Utley
-----------
Cable Volkswagen
405-470-3129
1-800-522-6793