Zero Pressure Waterless Coolant?
 

Hey guys, my eldest just sent me a link to a Bimmer forum, describing use of Evans Waterless Coolant, espousing it's use to decrease cooling problems/blown radiators, raise mileage 10%, and last indefinitely (albeit at a premium price!). I don't recall seeing this discussed on this forum, and a search found nothing. Here's the manufacturer's link.
http://www.evanscooling.com/
Anyone have any real world experience with this product, or try it in their SVX?

Glenn

Re: Zero Pressure Waterless Coolant?
 

No real world experience from me, but some theoretical rebuttal. The whole premise of increased fuel economy appears to be because you can run hotter temparatures and reduce cooling fan usage. This requires A) a higher temperature thermostat (not likely available for the SVX), and B) a mechanical belt driven fan (not present on the SVX).

The idea of hotter temperatures seems suspect, given that engine (and transmission!) tolerances are for very specific coolant temperatures. Raising them could have very very bad side effects on bearing wear, cylinder wear, etc.

The site linked seems geared to heavy duty and/or trucking applications, where you would (I'm guessing) have more control over certain related functions. Specifically:
•Evans Waterless Coolants allow most engines to safely operate at a higher temperature. Engines can be safely tuned for more power or better fuel efficiency.
•When trapped heat is eliminated from the cooling system non-computer regulated engines can operate at higher temperature increasing engine efficiency.

Neither of those bullet points would you be able to apply to an SVX. Well, so long as it's an EG33 equipped SVX still...

It seems like it could have benefits in motorsports or heavy duty applications, where you have complete control of your tune, desired operating temperature, etc, but absolutely zero benefit for passenger car use...

Re: Zero Pressure Waterless Coolant?
 

I don't like the high viscosity. One might need a special "water" pump.

Re: Zero Pressure Waterless Coolant?
 

On the website it says:


Conversion Process
How it works » Conversion Process
You can attain all of the benefits of the Evans Cooling System with ease. Quite simply, Evans Cooling Systems require no major mechanical changes, just a parts exchange. You may need the specialized NPG™ coolant pump, NPG™ radiator with a non - pressurized radiator cap as well as the new Evans NPG™ Coolant. With a few tools and our easy to follow, step - by - step, instructions, you can easily and safely convert your vehicle to the Evans NPG™ Cooling Systems in a couple of hours.

Re: Zero Pressure Waterless Coolant?
 

I wonder if DessertRunner might find this of interest. IIRC he was having cooling problems about a while ago.

Re: Zero Pressure Waterless Coolant?
 

if someone is stupid enough to put that in a bimmer they deserve the consequences. it would be hard to implement in the svx let alone a car with multiple water pumps and an electric thermostat.

My initial reaction was one of skepticism, but this stuff seems pretty interesting.


Judging from what I have read all you may need to "convert" the SVX is a smaller pulley for the water pump. Then again, I'm still not an expert.

Re: Zero Pressure Waterless Coolant?
 

Interesting responses, and thank you! Here is the link to the Bimmer forum I mentioned, for some additional insight into the experience from some car owners. Note, this thread begins in 2010.
http://forums.bimmerforums.com/forum...=zero+pressure

To abbreviate 9 long pages, take a look at posts:
1
30 (OP)
34
44
46
84
87 (new user)
89
101
103
114
118 (another convert)
148
162
165 and 166 as well as several newer updates from OP. Of note is that these are mainly 540 owners and they have nearly 3 gallons of coolant capacity. OP is a firm believer after more than 2 years use, and I see no mention of parts conversions done, such as higher flow water pumps, etc as mentioned above. I think this might be a worthwhile product to look further into via written exchange with the manufacturer as to possible SVX application. Still awaiting any further comment by actual users.

Glenn

Re: Zero Pressure Waterless Coolant?
 

Aftermarket Gadget and Gizmo Rule of Thumb: If it worked as advertised, automakers would be all over it.

dcb

Re: Zero Pressure Waterless Coolant?
 

that would also involve using a different belt which would open up a whole ball of wax. best option would probably be to take the impeller off the existing pump and use an external electric water pump.

Re: Zero Pressure Waterless Coolant?
 

Not necessarily...
I can see several reasons why in this case this wouldn't be true. Their extra cost would be a negative for one. Anything that costs them $100 more and they make 1,000,000 cars... Also I think that the general public might not be ready for this yet... probably an understatement... if the reception from the members here is any indication and it probably is a pretty good indication. "As the world turns", some will come around!

Any change, after obama selling America on "change", has really made everyone in America gun shy, and the thought of adding additional "change" is extremely frightening.

The most difficult problem I can see would be to get ALL of the existing coolant out of the system. SVXFILES, oab_au, and possible another guy will know the best way to do this.

The coolant fans or the thermostat will not be a consideration. The point of less time for the fan to operate is simply a way to gain a little better gas mileage. As far as the thermostat in the water pump is concerned, the SVX engine is designed to run at a certain temperature and any change would probably not be beneficial. RPM of water pump is also a non-issue.

Since there are apparently no downsides to this except a little work to get the existing coolant removed, and possible the original cost of the new coolant, I am seriously considering doing this to one of our SVX's. If it works as expected, all three will get the same. If it doesn't, I will simply change back. Since no modifications are required, that wouldn't be any big deal either.

Keith:cool:

Re: Zero Pressure Waterless Coolant?
 

Please share anything you decide Keith. I'm considering emailing their Rep to inquire about trying it in mine.

Glenn

I may give it a shot after rebuilding my engine this summer. Can't hurt.

Re: Zero Pressure Waterless Coolant?
 

True... we can switch back easy!

Re: Zero Pressure Waterless Coolant?
 

Will do! I Need a little warmer weather to get started on it but I am "doing it"

also, there is quite a price spread, from different sources, on the same products, so watch for that!

Factor shipping in as always, for a total. In Washington state we watch for state sales tax of 10% as well. With Amazon you can get stuck with the sales tax and the same item at eBay might not be required by law to charge you the tax... Interesting?

I got some pretty good information from this link. You can just cull out the part that doesn't apply and save it!

http://www.hrpworld.com/client_image...ader/683_4.pdf

Keith:cool: