This guy has done a lot of looking into Evans and has a large playlist on why he dislikes it (the info above is from the info from his findings). It's basically unnecessary if you have a normal working coolant system, and if not, should get the system fixed than move to this to 'hide' the issue. Get a leak somewhere and you can't top up with water - well you can but then you ruin the idea of waterless coolant and need to start again with a complete system flush. If your engine is overheating, you have a coolant system issue, not an issue with the coolant.įinally, it's massively expensive.

This is wrong, the coolant system is meant to be pressurised and it's this pressure that causes water mix to have a much higher boiling point, allowing the system to effectively cool the engine. This has happened to people who had it in their motorbikes and in an accident the bike burst into flames, with no other damage than a split radiator.Įvans state that 50/50 mix will expand and cause unnecessary pressure and keep stating how water boils at 100C. Also it's highly flammable when hot, so if you get a small coolant leak, you can potentially get an engine fire start soon afterwards if it leaks onto a hot exhaust etc. Propylene Glycol is a thick liquid when cold, so on cold starts puts your water pump under higher stresses than normal mix. Evans wont stop a malfunction and it wont highlight it either. Normal 50/50 will result in steam being visible meaning you'll see it and shut down before any issues (hopefully). Also, since it wont boil over as easily, if you have a coolant failure, you wont know, which will cause the engine to overheat past it's specified limits, potentially resulting in catastrophic damage. Before you change to Evans you should know the pitfalls.Įvans marketing hype will have you believe it's some sort of magic liquid that protects the engine, but it is basically 100% propylene glycol (a little less as it has some anti-corrosive stuff in etc) and doesn't transfer heat anywhere near as well as 50/50 water/antifreeze and as a result your engine runs a lot hotter and can't get rid of excess heat as well as it should.

Evans coolant propylene glycol