Waterless coolant

[Breadsnapper]

Hi all, I am thinking of replacing the coolant in my bike with a waterless coolant.

I know Evans do a motorbike specific one but has anyone any experience of using it?

Cheers

Dave

[Gerontious]

no. Just no.

Use what Honda (and every other manufacturer) recommend.

[Stu]

Waste of money

[Breadsnapper]

Thanks for the replies. I won't ask about iridium spark plugs

Dave

[Bender]

Thanks for the replies. I won't ask about iridium spark plugs

Dave

 

Nothing wrong with iridium plugs, they last longer but cost more some manufacturers specify them.

If they are not specified and your not pushing for performance it's not worth the expense.

[Breadsnapper]

Cheers

[fastbob]

Stick to water , not worth the risk . As for iridium spark plugs go ahead it's your money .

[Breadsnapper]

Stick to water , not worth the risk . As for iridium spark plugs go ahead it's your money .

 

Apparently they misses says it's "our" money.

Dave

[winston smith]

Yep, what they said ^^^^

Plain water is by far the best coolant in terms of heat transfer. But pure water increases corrosion and freezes at relatively high temps..

Most manufacturers recommend a 50/50 mix water/glycol, because that's enough water for cooling and enough glycol to minimise corrosion and lower the freeze point below ambient winter temps.

Evans type stuff is 99+% glycol so heat transfer is nowhere near as good as 50/50 mix, which could damage the engine.

[Breadsnapper]

Yep, what they said ^^^^

Plain water is by far the best coolant in terms of heat transfer. But pure water increases corrosion and freezes at relatively high temps..

Most manufacturers recommend a 50/50 mix water/glycol, because that's enough water for cooling and enough glycol to minimise corrosion and lower the freeze point below ambient winter temps.

Evans type stuff is 99+% glycol so heat transfer is nowhere near as good as 50/50 mix, which could damage the engine.

 

I thought the plus point with Evans is that it doesn't get hot. Didn't realise it runs hotter than water.

Cheers for that.

Dave

[JRH]

Have a read of the Evans water less fluid web site. It is not a simple changeover. You need to use a pre-fill fluid to remove old coolant. They also recommend changing the radiator to one having large diameter tubes!

They also state that 50/50 water glycol systems cause a overheating!

“Traditional engine coolant is 50% water, but water causes engine corrosion and overheating. Evans Waterless Coolant is a glycol-based fluid that contains no water, so it eliminates many of the problems of water-based cooling systems.”

[winston smith]

Yep, what they said ^^^^

Plain water is by far the best coolant in terms of heat transfer. But pure water increases corrosion and freezes at relatively high temps..

Most manufacturers recommend a 50/50 mix water/glycol, because that's enough water for cooling and enough glycol to minimise corrosion and lower the freeze point below ambient winter temps.

Evans type stuff is 99+% glycol so heat transfer is nowhere near as good as 50/50 mix, which could damage the engine.

 

I thought the plus point with Evans is that it doesn't get hot. Didn't realise it runs hotter than water.

Cheers for that.

Dave

 

I can't remember the exact figures, but I think an engine with Waterless Coolant runs at around 20% hotter than the standard 50/50 mix. Doesn't sound like much when temp gauge shows 80-ish degrees C, but head temps can be 600-800 deg C , and that's when it can become an issue. Glycol doesn't pull heat from the engine, or push heat out from the rad as well as 50/50.

Car and bike manufacturers spend a lot of time and money designing and testing cooling systems to work properly. If Waterless coolant was so much better they wouldn't still be designing engines for, and recommending 50/50 mixes. They also put pressure release caps in the system as a safety measure. They are triggered by steam - which you won't get in a Waterless coolant system, glycol boils at around 200 degC

[Breadsnapper]

Cheers Winston looked on their site and it states engine run a few degrees hotter but the heat transfer is better. Not being a physicist I have no idea how it works. Lots of the other stuff they say makes sense but I suppose if it was that much better than water and antifreeze then manufacturers would be doing it.

Dave