Yes on both counts as long as the system has no leaks to the outside other than the working pressure cap. If you do have combustion gasses going into the coolant it's bad because there are nitrogen oxides (NOx) in the gasses that will create nitric acid in the coolant. This will overwhelm the anti-corrosion inhibitors quickly and dissolve your engine from the inside out. You likely have combustion gasses. Have someone sniff the pressure bottle with an emissions tester. Stuart -----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Tom Carchrae Sent: Monday, September 09, 2013 3:05 PM To: vanagon@GERRY.VANAGON.COM Subject: Re: A Different Coolant Problem Sure. And no doubt that steam in the engine is a nasty cycle, with air/steam pockets creating more/bigger hotspots. However, once cooled, if there are no combustion gasses, then all the steam should disappear, right? When that happens, it will draw coolant back in from behind the licence plate. The only time it could leave air is if (a) it was combustion gases or (b) if the tank behind the plate was empty, or (c) the cap or pipe (to the reservoir behind the plate) has a hole. |
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