All such mixtures have inherent physical and chemical limitations that restrict engine performance and affect reliability. Since the 1930's engine coolants have been based on a mixture of ethylene glycol, water and corrosion inhibitors. The significantly higher boiling point of Evans coolants means 75% less pressure than water resulting in a less stressed cooling system. When water turns to steam it pressurises the cooling system putting strain on hoses and other components. When the coolant fails in this way the engine becomes even hotter causing more hot spots and more steam.Įvans waterless coolants will not boil around these engine hotspots maintaining efficient cooling performance even when the engine is put under extreme conditions. In these hot spots water is likely to vaporise preventing efficient cooling and causing loss of performance and unnecessary engine damage (see physical limitations of water). Within an engine cooling system the hottest surfaces are those adjacent to the combustion chamber, specifically the cylinder liners and cylinder head. This article details the benefits of a significantly higher boiling point. Evans is a superior fluid for transferring heat in engines because it remains in a liquid state until above 180☌. Water is an excellent fluid for cooling whilst in a liquid state, but when water turns to steam it has virtually no capacity for heat transfer. Power Cool 180° eliminates premature detonation associated with overheating. Power Cool 180° generates significantly less pitting when compared with all water based coolants. Power Cool 180° allows your cooling system to run at a lower pressure, reducing the strain on engine components. Water contains oxygen, oxygen allows corrosion. Power Cool 180° has a boiling point of 180☌ and will not boilover specifically designed for Modern engines What happens if you get coolant loss because of a fault or leak, can you then just top it up with water to get you going or do you have to have 5 litres of the stuff with you just in case?Ĭan't answer the first one but the 2nd point is I reckon it's biggest drawback, you can bung water in but then you'll have to start the whole process again once the problem is fixed as it is basically "contaminated" which can cost you quite a bit of money to get some fresh stuff but in a position like Ian's where the engine is rebuilt using new or nearly new parts then for sure I'd get some I recently suffered a crack in the heater bypass valve whilst driving through Italy. Or I could be completely wrong and 'thermal sysphoning systems' are something completely different. It says on their website 'not suitable for thermal syphoning systems', isn't that what we all run? When the coolant is hot it expands into the expansion tank, when it cools down it syphons back into the engine. Sounds really good, just a couple of questions.ġ.
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