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  #1  
Old 06-01-2010, 05:34 PM
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Anyone use Evans NPG+?

I was wondering what experience you have with this coolant or what do you think about it. It seems like a lot of people use it on other cars but I haven't heard anybody using it on BMW.

Since we have so many problems with the cooling system I thought this might be an answer.

Home Engine Cooling Systems
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Old 06-01-2010, 09:44 PM
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Waterless Engine Coolant, interesting. I'm curious too if anybody's tried it. Wonder how much that stuff costs?
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Old 06-01-2010, 10:07 PM
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weird
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Old 06-01-2010, 11:50 PM
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Would want to know the PH level and if it is phosphate free due to the metals and plastics used in our systems.... if it is all in sync and compatible it would be some good stuff to switch to during some maintenance or repairs. But it will be all but impossible to get 100% of the old stuff out because of things like the oil coolers and heater core etc. so it will have some "water contamination" in it.
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Old 06-02-2010, 12:53 AM
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Check this out.
I did it! A zero pressure cooling system. - bimmerfest - BMW Forums
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Old 06-02-2010, 01:11 AM
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So the dude has now been using it for 2 weeks without problems. Not exactly a long term test yet...
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Old 06-02-2010, 07:38 AM
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Interesting stuff. Another question off topic. Why do people worry about the fan clutch as noted in that other forums thread? Do they fail abruptly, and is there a specific cause?
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Old 06-02-2010, 07:40 AM
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120 dollars for 4 gallons
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Old 06-02-2010, 08:16 AM
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Quote:
Originally Posted by fmugur View Post
That isn't a zero pressure system.... It is a waterless, but not zero pressure as it is still closed with a 1.4 bar cap. (which is about 20 psi) The pressure in a cooling system is from the expansion rate of the metal in the engine, not from coolant boiling. I have not yet seen a "no pressure system" in my life, not even on my old '69 F250. Basically if it has a sealing cap it has pressure when above room temp.



**edit** I have seen a no pressure system, and it is waterless as well. Volkswagen beetle.
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Old 06-02-2010, 04:45 PM
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so i guess what is really going on is that there is no pressure being applied to the cooling system due to the expansion of water...seems the relief in pressure within the cooling system would extend the life of radiators and hoses since the heat cycles wouldnt have the associated pressure cycles...seems worth keeping an eye on how dude makes out in the long run.
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