Date:         Wed, 20 Mar 2002 09:40:24 -0500
Reply-To:     Richard Bias <rbias@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Richard Bias <rbias@HOTMAIL.COM>
Subject:      Re: Antifreeze Enema
Comments: To: Doss88Wkndr@AOL.COM
Content-Type: text/plain; format=flowed

Brian,
  Phewww...  Sounds like alot of work and juggling and I am not sure you
will displace the correct amount of pure water before you start to see a
mixture of antifreeze and water.
  The method I came up with that I think works very well is, follow the
prescribed method (raise the front, 2K RPM, open bleed screws... etc) for
about five to ten minutes maximum to make sure the air is out of the engine
compartment and the heater circuit, this leaves the "air gap" that you are
trying to bleed out of the system, at the top of the radiator because this
is the highest point in the system.  Then, just top off radiator with
correct mixture antifreeze and water through the bleed bolt hole with a
pump.  I use an extra pump that I have for fueling my radio controlled
airplanes.  This "tops off" the whole system with out doubt.

  Good luck.

  Rich


>From: Brian Doss <Doss88Wkndr@AOL.COM>
>Reply-To: Doss88Wkndr@AOL.COM
>To: vanagon@GERRY.VANAGON.COM
>Subject: Antifreeze Enema
>Date: Wed, 20 Mar 2002 09:25:16 EST
>
>I'm thinking out a method of replenishing the antifreeze without any chance
>of introducing air.  I seem to waste a lot of coolant by adding into the
>expansion tank while the engine is running etc.  Any fluctuation in RPM
>makes
>the fluid go all over the place, and trying to get the cap on at just the
>right moment is tough to do without introducing air.  Here is my intended
>method; (1) Make temp filler cap from spare pressure cap by removing
>valvery.
>Install this on expansion tank. Attach length of clear tubing to temp
>filler
>cap and the other end into container of undiluted antifreeze suspended from
>ceiling or step ladder as high as practical above van. Start siphon by
>draining off some old coolant. Clamp off tubing. (2) incline van (3) drain
>&
>flush using tee in heater hose method - mine is brass (4) remove bleeder
>screw in radiator (5) fill system with pure water through flushing tee at
>low
>steady pressure, allowing stream to flow from bleeder. While this is going
>on, run van for few minutes at 2000 RPM with heater open to circulate water
>&
>get rid of any air (6) Shut off van, water, cap tee, close bleeder screw.
>(7)
>Unclamp tubing (8) Now you have an air-free cooling system of pure water.
>All
>that remains to be done is to remove bleeder screw, which will start to
>siphon in pure antifreeze. As each unit of antifreeze siphons in, a unit of
>water will be displaced by it and run out of radiator bleeder. Continue
>until
>mixture is correct proportions. (9) install bleeder screw and pressure cap.
>(10) Take drive (11) Check top of expansion tank for air, check
>concentration.
>
>Any thoughts?
>
>Brian Doss
>'88 Weekender, Queequeg


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