• David Bracey
    7 March 2014 at 15:28 #50708

    Anyone used waterless coolant in their cars?

    I have it in my Aston DB6 and it has been very good. I have had a water heater valve diaphragm fail but don’t think it is related to the coolant.

    I’ve filled my LG45 system with Evans so will see what happens.


    8 March 2014 at 08:50 #50711

    Used a similar product in my M45 some years ago. Found it a waste of time (and money). Better to resolve the cooling issues I think personally. On my M45 I fed the water pump outlet to the back of the head (like the 3 litre) but that is another story ….

    Peter S30
    10 March 2014 at 08:05 #50712

    I fully agree with bill. If the cooling water boils it shows a problem that should be solved and I am very hesitating in using new products because sometimes they create unexpectected trouble elsewhere. For example these cooling liquids allow much higher temperatures before boiling (that is the idea) but is that really good? What does the chemistry do to the old materials in the long run? For modern traffic (jams) I put an electric fan on my cars.

    10 March 2014 at 10:30 #50714

    I am in total agreement with Bill & Peter.
    Best to know if your engine is too hot.
    Also you have to thoroughly flush out the existing coolant/water first before adding the waterless coolant (neither of which are cheap).
    Then what happens when you get loss of water whilst out travelling? unless you are going to carry X amount of litres of the stuff around with you, you will have top up with water which reduces the benefits of the waterless coolant.
    Just my opinion as I have not tried the stuff.
    Best Regards

    Colin M34
    10 March 2014 at 15:56 #50717

    Hi Chaps,

    Just to agree with the others, start by making sure your radiator is completely de-scaled. When driving my LG45, after a fast run followed by a slow section I had the classic “brown shower” erupt from the radiator cap. It went all over my windscreen and I had to peer through a gap! I fixed this with lots of Fernox DS3

    ideally, de-ionised water plus antifreeze and maybe a little soluble oil seems to be the right solution. Has any one else had experience of “Bars Leaks” which has been around since our cars were new?

    Colin M34

    Alec Rivers-Bowerman
    10 March 2014 at 19:55 #50723

    I’ve had two experiences with Bars-Leak. In both cases, I didn’t know the cars had this stuff in their coolants. The first car had a massive water loss halfway through a 700 mile trip, the second (in a used car I had bought the day before) did the same, though fortunately close to home. This stuff does work, but it hides the leaks and as we all know, mechanical systems are generally not self-repairing. Sooner or later the leakage gap grows to the point where the Bars-Leak can’t fill it and the coolant just pours out. The only excuse for this stuff is as a “get-you-home” stopgap. Otherwise I would consign it to the far side of hell…

    Colin M34
    11 March 2014 at 13:46 #50726

    Hi Alec,

    I agree that Bars leaks only masks problems, though it has been good with honeycomb radiators where this is nothing more than a slight weep.

    However, I feel the more interesting constituent is what I assume is soluble (i.e. cutting) oil which turns the water white. This is otherwise known as suds and is lovely stuff for machining. Has anyone else got any comments about using suds in a cooling system?


    12 March 2014 at 13:16 #50733

    I have used Waterless Coolant in all my cars for years – including the Lagonda and it’s fantastic. Never anymore radiator issues; no overheating, freezing, clogging up etc. Expensive but worth every penny and actually very cheap in the long run as you never need another radiator again – and I top up about 1/4 pint per year!
    The argument that you do not know if the engine overheats is invalid. The temperature gauge still shows exactly how hot the coolant is. With water your gauge will not tell you how hot the engine is; 100 degrees makes the water boil so it doesn’t cool the engine anymore while the engine itself can be much hotter. With Waterless Coolant you know the exact temperature of the engine – up to 160 degrees when even Waterless Coolant starts to boil. But that temperature is still quite safe for an engine. And meanwhile the Coolant kept the engine temperature down, unlike water.

    12 March 2014 at 16:38 #50734

    An alternative is a product called “Forlife” which I intended to use once my cars were back on the road, however I understand that Jonathan Oppenheimer had serious problems resulting from using that product in his V12. The Evans product seems to get good press all round…apart from the expense, and concern regarding emergency topping up in the event of, say, hose failure.
    I wonder which ingredients justify the substantial price?!

    Incidentally (and more on topic!), I have to say that I’ve been pretty impressed with Bars Leaks and similar products. Towing our caravan up to a Scottish holiday, our car, a 1964 Rover 2000 started misfiring and overheating. It transpired part of the head had corroded away, letting water directly into a combustion chamber. At low speeds, sucking water in; at high speeds, blowing it out. Bars leaks fixed it, despite the heat and compression pressure. Got us up to, around Scotland, and back to Surrey.
    Also, my Lancia Y10 had a miniscule weep from a steel water pipe, the removal of which appeared impossible…so the (stupid) repair was to run the car without antifreeze. After a few years….and naturally, whilst on holiday at Sables d’Olonne, I noticed a big puddle under the car. A core plug had rusted through. A big hole; water poured out almost as fast as I poured it in. Went to the local ? (or is that ??!) shop & bought a tin of stuff. Poured it in with no hope of success…but it did actually seal it. I never did replace the core plug, so nothing but praise EXCEPT forever after, the car ran 10 degrees hotter. Not in itself a problem, other than leaving less margin for boiling over in traffic jams (the radiator fan had seized with rust as it had never previously had need to come on). So…it will tend to clog perhaps narrow passages…such as those in a radiator core.


    James Mann
    3 October 2015 at 08:08 #51485


    I have had the most dreadful time using Evans waterless coolant. My engine is on the third rebuild since using it. I have done some basic research on the web. The scientific report by No-Rosion have carried out comes to the following conclusions

    Conversion costs of $259 if you do it yourself, or over $400 if you pay a shop to do it.

    97%+ removal of all previous coolant is mandatory in order to prevent corrosion.

    Inhibitor deposition occurs on aluminum surfaces, which could cause issues in some radiators.

    Engines run 115-140oF hotter (at the cylinder heads) with Evans products.

    Stabilized coolant temps are increased by 31-48oF, versus straight water with No-Rosion.

    Reprogramming ECU fan temp settings is mandatory to prevent the fan from running continuously.

    Specific heat capacity of Evans waterless products ranges from 0.64 to 0.68, or about half that of water.

    Engine octane requirement is increased by 5-7 numbers.

    Computerized ignition must retard engine timing by 8-10o to prevent trace knock.

    Engine horsepower is reduced by 4-5%.

    Accelerated recession of non-hardened valve seats in older engines is possible, due to brinelling.

    Viscosity is 3-4 times higher than what OEM water pumps are rated to accommodate.

    Coolant flow rate through radiator tubes is reduced by 20-25% due to the higher viscosity.

    Race tracks prohibit Evans products because they are flammable and slippery when spilled.

    ?? Copyright 2012 Applied Chemical Specialties, Inc.

    Evans is 10 times more viscous than water and will not pass through a honeycomb radiator or fine tubed radiator fast enough to cool your engine properly. the 20-25% reduction in flow rate is for modern wet core radiators and not prewar radiators. It will cause catastrophic damage to your pistons and bores with no warning. The temperature gauge will not rise significantly before smoke appears from under the dashboard and your engine will need a rebuild. This tends to occur on long motorway hills.
    I am currently asking Evans to show me the research done in order to call their coolant ‘Vintage’, and so far they have not been able to produce any evidence at all that their product cools as well as water or is suitable for Vintage vehicles. :{
    My repairs have cost over ?8000 so far and I have requested compensation.
    They are not taking my complaint seriously yet, and I feel that I have a duty to warn other waterless coolant users and potential users.

    James Mann

    6 February 2018 at 14:46 #52655

    Just to resurrect this thread once again about waterless coolants and the like ….
    There have also been other comments elsewhere on this Forum.
    Maybe it is worth reading and noting Jonathan Oppenheimer comments in the February Newsletter (just received) about his experiences with “4 Life Coolant”. I do not know the product specifically or the circumstances in which it was used but it would appear to be one of the so called “waterless coolant” varieties.
    In my humble opinion do NOT use these products in our old fashioned engines or be prepared for trouble.
    If you do use them be prepared for localised overheating of which you will not be aware. This can cause pistons to seize and other problems.
    Your temperature gauge (if accurate) only tells you the temperature in the header tank and not elsewhere in the engine.
    I was assured by a very well qualified modern automotive cooling engineer (working for a large well know car company) that nothing is better than ordinary water for cooling – although maybe add a little antifreeze/corrosion protection.
    Any alternatives views,experiences or comments welcome !

    Steve Darnell
    19 February 2018 at 13:39 #52664

    I have a 14/60 HC, and there is no cooling fan. I propose to fit an electric fan to assist the cooling, and should be grateful for advice as to what make/model/type to fit. I am a little impecunious and need to spend as little as possible.

    19 February 2018 at 16:36 #52665

    If you have had your radiator re-cored and the block has been cleaned of all sludge it is almost certain you will not need a fan. In fact the majority of 14/60 and 2 Litre cars do not have one fitted. The Lagonda radiator with water pump is very efficient. The normal running temperature is 70C. My car sits at a steady 70C unless it is a very hot day or I am stuck in traffic and even then it does not boil.
    As for waterless coolant, I would never touch the stuff, too many issues have arisen with different vintage engines that are well documented

    Colin M34
    19 February 2018 at 18:52 #52667

    Hi Steve

    Just to add to Mark’s wise words, check whether you have a thermostat. If you don’t have one you will need to fit one. The thermostat diverts the coolant from the bypass which is at the side of the radiator, and opens the flow to down the honeycomb.

    Also check that the water pump impeller is going round. It is riveted to the shaft and I have known for these to dissolve.

    You may need to descale the radiator using Fernox DS3 .
    Colin M34

    Steve Darnell
    20 February 2018 at 08:17 #52668

    Thanks for the kind advices. The honeycomb core, thanks to the good folk at Hartlepool Radiators, is brand new. I will certainly try running without a fan. I have rebuilt the pump, with a new impeller – it’s circulating the water well. Today, we’re fitting new fasteners to the aluminium ‘jacket’ that holds the dynamo, with stainless 5/16″ setscrews, and epoxy thread sealant (we’ve drilled right through at 5/16″ because the 1/4″ BSW threads were too badly corroded). Thermostat located, cleaned, tested OK.

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