ncmudbug

Has anybody seen the waterless coolant on Jay Leno's Garage website (Evans Waterless Coolant - http://evanscooling.com). I would doubt that it is approved by MB if only because it is probably a pretty small market. It seems best for new builds since you would want to minimize the amount of water in the cooling system when replacing the coolant to this product. It is a lifetime coolant that never needs flushing.

It sounds like a very interesting product.

Glyn M Ruck

There is nothing new about that. The oil companies & OEM's have tried all sorts of glycols neat. Their biggest failing is that they don't achieve the heat transfer that water does. They are poor in that regard. Cooling systems are designed for water based coolants. People like VW already run higher bulk oil temperaturs for the sake of efficiency. Crippling the cooling system is not the way to do it. Modern long life coolants have huge life & protect against corrosion etc better than any glycol could. My ex company's carboxylate technology coolant is in fact the genisis of BASF coolant that Benz use. I'm afraid they violated our patent which led to making lawyers wealthy & BASF having to pay us a royalty these days.

Glycol is in ever decreasing global supply. It should be used where needed & no where else.

Glyn M Ruck

The Audi blue coolant is BASF material & very close to the Benz product.

The new Audi Current pink/violet G12++ is also a HOAT coolant from BASF

Pentosin have approved VW/Audi equivalent.

ncmudbug

I looked further and saw their product was a propylene glycol - hadn't seen that before. It seems their advantage is the higher boiling point and corrosion resistance. They don't mention water pump lubrication - I thought I remembered that part of the function of the conventional coolant is to provide some lube for the water pump. Did I misremember?

I also remember that the optimum water temp was 180 - 200 so higher temps were not beneficial but since higher boiling point is one of their stated advantages I must have been incorrect there, too. What did I miss?

mtnman82

Evans is not an anti-freeze, so if you're in a colder climate you won't have that protection. Also, I've read reports of people using just the Evans for a year or two (in a racing application) and then noticing some minor corrosion or build up in the system. Plus, you'll need to thoroughly flush the cooling system because the Evans does not play well with anti-freeze.

ncmudbug

Thanks for the info. As I was saying, I was considering it for my Lotus, but given that I might have a heating issue (depending on the accuracy of the gauge) and also because it doesn't get that cold here, I might be better off with "wetter" water that cools better. Evans says they can only tolerate up to 3% water so that would require things to be pretty dry. I don't think it's worth the trouble.

ibrian hb

i have a e320 2003 petrol,


i cleaned the radiator with high pressure water and loads of grey water came out and some other colours brownish and that, cleaned it and it actually cooled it down, and ac working quicker and cooler, the thing is i want to flush and change the coolant water as i dont know if its been done or not since i bought it done oil changes and filters and all the service my self.


is it ok for that model year to do so, liking the DIY keeps that bond between me and car , please let me know thank you.

ibrian hb

done coolant flushing and refilled and it runs great, but after 11 years :P

EOB

Did you get an answer to your question as I was wondering the same? How would you remove the thermostat from its housing?

VVF

EOB,
Why not just fill with pure distilled water and let the car get to the operating temperature, the thermostat will open by itself That way you also flush the heater core/engine block. (you will need to rev the engine a bit for the coolant to circulate to the heater so that you feel it blowing hot air in the cabin)
I guess if you are doing it in winter then might take a while...
Then drain again & fill with coolant.

EOB

Yes, will be flushing this week - winter - but I'll try that procedure. Thank you.