http://www.evanscoolants.com
 

What do you guys think of Evans waterless coolant in the 617?

My 617 has lasted 32 years without it.

N=1
/sarcasm :P

Supertech at Wally-Mart is $10.00. Evan's I've found cheapest for $34.00. That's more money down the drain than the guys who spend $26.00 for MB coolant or $19.00 for Zerex. Green works just as adequate.

It might be more expensive first off, but it's a lifetime coolant...I'm going to try it when I get around to it. Probably when I get rid of that horrid plastic tanked radiator :P

It's popular on the BMW boards where owners have to contend with high operating temperatures (108*C on the E39 540i!!) and pressures, plus brittle plastic parts such as expansion tanks that fail relatively frequently. Not to mention BMWs tend to be driven harder, in aggregate, than MBs.

As for 617s, IMO it's completely unnecessary. These cars have durable, low tech, low temp, low pressure cooling systems that are plenty sufficient to cool the engine as is when in good working order.

Furthermore, the system needs to be 100% Evan's without any water in order to work as advertised, and you cannot simply top up with distilled water or "green stuff" if you run low while on a trip. Each gallon costs about $35 as mentioned previously, and is generally only available online.

Further still, MB specifies replacing coolant every 2 years in these cars. I don't believe in lifetime coolant any more than I do lifetime ATF as advertised on newer cars.

50% Zerex G-05 / 50% distilled water is OE approved, readily available, cheap, and effective for a cooling system in good working order.

"Lifetime" until you have to replace a radiator hose, or a water pump, or a radiator, or a thermostat. You're going to drain out the cooling system once every couple of years no matter what and you're not going to refill it with dirty contaminated coolant just because it said "lifetime" on the bottle.

I would.

Do you know of any new car that spec's NPG? Not one. Maybe a Bugati Veyron? You don't need this.

I've had it in my signature car for about a year and it works fine. I run at zero pressure, so I won't be blowing any hoses, radiators, or heater cores. I can't find a reason not to use it. No corrosion, no cavitation and no electrolysis. What's not to like about that?

It's a bit of a job to install the first time, as you'll need their prep fluid and a refractometer to verify that all the water is removed.

Also works fine in my standby generator. When I get my '66 Coronet Hemi in about a week, it will get the treatment also.

BTW, evanscooling.com is the US website, coolant is the UK website.

Actually coolant service is every three years, at least it is on my 123 and my 210. On my '03 SLK the coolant is a 15 year/150,000 mile interval. There is a chemical pack in the system that dissolves over time. Not sure if a replacement pack is available or not. If not then I assume that car goes to a three year interval too.

I use GO5 in the diesels. Bought it on sale last time for $10/gallon. Usual price is $18 or so at NAPA.

While reduced cavitation is a clear advantage of NPG, the rest of what you say isn't true at all. Pure glycol degrades into glycolic acid in the presence of air..which is far more corrosive than water...spill some brake fluid on your paint if you don't believe me. And glycols function just fine as electrolytes. For this reason, Evans includes a corrosion inhibitor in their formula, and it's probably similar to the formulations in other lifetime coolants. Is it lifetime? "Lifetime" means seven years for most cars.

Here's are reference on uninhibited and inhibited pure glycols (ethylene and propylene glycols have similar corrosive properties):

Cooling Systems Corrosion - Application Note - Lytron Inc

Vedra Industries> Ethylene Glycol and Propylene Glycol

Glycol Corrosion Inhibitor - Propylene Glycol Corrosion Inhibitor and Mono Ethylene Glycol Corrosion Inhibitor Manufacturer & Exporter from Kolkata, India

I am using it and have had good results, meaning lower engine temperature. Also no pressure means I don't have to block off the transmission lines.

How much is a dog worth? How about a Service Dog?

How about the environment? What do you think happens to all the coolant that is spilled in a vehicle accident?

I am not saying I am careless, but rather partake of risk aversion. ;)

Also, there seems to be no issue with a small amount of A.T.F.. In my case, the coolant only went one way as find no evidence otherwise. Just have to get another bottle and top off. Das ist alles! :D

As for lifetime, information states it should be changed when it turns red.

Oh and just because something was done in the past doesn't mean that it should be done in the present. If you say otherwise, in Architecture that is called Post-Modernism, and isn't valid or realistic. Take for example the face jeans have watch pockets. Since when have we carried watches in our pocket? I have seen a reduction in even folks even wearing a watch. ;) Most of the time I find watch pockets useless and sure most folks do.

How, exactly, does that concept work?

I think he assumes a leaking cooler won't get water into his transmission with zero pressure waterless coolant.