Anyone out there running the Evans Cooling Systems NPG+ 100% propylene glycol coolant? Supposedly the hot (!) ticket. Is it unecessary on a street car? www.evanscooling.com
Never heard of it til now. I read a bunch of info on their site and I like what I read. Its funny that I've been running 100%, or close to it, of traditional coolant successfully for probaby 20 years and people have been saying I'm nuts the whole time. I didn't check on the cost yet but if it really improves mileage, that would have to be factored in. One thing is that they do all their comparing to traditional coolants and not to unconventional 100% glycol like I use so I wonder how much better the Evans is than regular glycol.
From what I read on thier site, it is NOT an anti-freeze and must be removed if you live in a below freezing winter climate.
There are at least 3 types of waterless coolants listed on that web site. NPG+ is described as a "blend of glycols". Freezes at -40 NPG is "100% inhibited Propylene Glycol". Freezes at -79 NPG-R doesn't have a description of the contents that I could find. Freezes at -10. So, it may not freeze in your climate, but HOW THICK DOES IT GET? Can you pump the stuff through the little tubes in your radiator when it's really cold? If you're after propylene glycol, let's keep in mind that Sierra and Amsoil (and others) also sell propylene; and they don't charge $32 a gallon for it. 'Course, they also don't say to use it without mixing with water... http://www.amsoil.com/storefront/ant.aspx http://www.sierraantifreeze.com/
I use Evans in my turbo car.I only pay 25.00 a gallon, only.. You have to do some mods to the system, 4lb cap,seal weep holes, etc. The main reason for use on my turbo car is it won't wash out bearing surfaces if and when I blow a headgasket. This is yet to be seen... Phil
