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Date:         Wed, 20 Mar 2002 09:25:16 EST
Reply-To:     Doss88Wkndr@AOL.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Brian Doss <Doss88Wkndr@AOL.COM>
Subject:      Antifreeze Enema
Content-Type: text/plain; charset="US-ASCII"

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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