This brand has been strongly recommended to me by a knowledgeable shop that has used it for years, and I intend to use it in my A6. My understanding is that it essentially prevents further corrosion, enabling continued use of the car's 60+ year old coolant pipes. However, I believe it is really only viable after a complete teardown, to ensure that there are no remaining traces of water. Its long service life is certainly advantageous.
Evans has been around for a long time. For those wanting to switch, just drain you existing cooling system. Use the Evans flushing fluid in gallon containers that permits you to purge any remaining water from you cooling system after you have drained it. You can also use the fluid with a zero pressure radiator cap if you wish as the boiling point of the Evans fluid is above 150 degrees celsius. Their fluid can be used for 10 of thousands of miles without changing. I'm using it in my Bora. You can go to the Evens website and learn all about it. Elliot
Check the difference in price between typical antifreeze and what Evans sells. That may be the reason for it not be standard for the OEMs. Elliot
I can understand that for high volume low to medium priced cars but which manufacturers are using it in a production car @$100K and above? If not then why?
Bob Even the high end car manufacturers don't spend money where they don't have to. I'm not sure that's the proper reference point. New car manufacturers don't worry about this because they have better materials and their warranty runs out well ahead of when the fluid needs to be changed and before it does much damage to the cooling system. Many race teams use this stuff, as do others and I have heard of more vintage cars using it. Clearly there's a market for it since it's been available for many years. I intend to use Evans in my Miura once rebuilding is complete, mostly because it purports to reduce/eliminate electrolytic corrosion which is one of the things that kills these vintage cars that aren't used often and it offers better cooling performance, which is important for the marginal coolant systems that most vintage cars have. The coolant doesn't deteriorate like traditional coolant does and you can also run it at zero pressure, which should reduce stress on the cooling system (shouldn't matter much for my car, since everything is being rebuilt anyway.)
I think there must be another reason. I don't know what it is but at the price of some of these high end cars I just don't see the difference in coolant price. An Aventador uses 6.6 gallons of coolant so total cost even at retail is $35 x 6.6 or $231. Come on guys ... an oil change in that car is way more than that. I'm a skeptic on this stuff. Like Water Wetter. I've used that many times and noticed ZERO difference.
I've been many "miracle" fluids over the years, all of them have one thing in common, it is impossible to see if they work or not, you just have to "believe" in them. Not my cup of tea.
Some properties of the Evans fluid are really beneficial to us: 1) Anti-corrosion: We have cooling systems with a variety of different metals coming into contact with the coolant. Stopping galvanic processes gives a lot of piece of mind. 2) Ability to run with zero pressure: A big difference for all hoses, waterpump-seal etc. In theory you could run your engine much hotter, and make more power. I do see a dis-advantage:You can't fill water in an emergency situation, and the Evans fluid is not commonly available. This may also be a reason for manufacturers to not use it. From Jim's discussions about use in his cars I seem to remember that some tracks don't permit the use of it either, or permission may depend upon race-regulations. What mess would you be confronted with IF you exceed it's boiling point?
If enough manufacturers started using it would become available. There already are such specialized products that are not commonly available on cars. Transmission fluid for my Jag's six speed tranny is "special". LHM anyone??? Though in France I hear it's pretty common. I really like the anti corrosion aspects though of Evans. Still, if you use good products, change it often and don't let the car sit it's not really an issue. One of those three tends to be a big if for vintage exotic cars ...
I would think that given the heat range of Evans Coolant, -40 to +375 F, that if it starts to boil you already have more to worry about with your engine than it boiling over. Most engines are toast above 350 F or earlier.
In particular the old Maserati V8, at least as it was originally constructed. When I spoke with Giulio Alfieri on this subject he was quite adamant about not exceeding the temperature limit on this engine irrespective of whether it actually boiled over or not. With more modern pressure levels and coolants that's pretty easy to do know. My Italian and his English were not good enough for me to find out the why to his adamant admonition on this topic.
Brought up in 308 board also.. http://www.ferrarichat.com/forum/308-328/396355-waterless-coolant.html
The Aviation Regulators FAA and EASA have Airworthiness Directives ( mandatory) that spec this type of coolant for aircraft expected to run at temps over 120C. This came out in 2007. "- Change of coolant specification: incorporate the mandatory use of waterless coolant into the relevant documentation of the aircraft." Graeme
