antifreeze

[Keith Clements]

More on G05. You may read some reports that Organic Acid Technology affects hoses and seals by softening them or not to use them in classic cars. These may or may not be true. G05 is a mixture of additives (inorganic and organic) (Hybrid Organic Acid technology) which claims not to affect hoses and seals. See the specification sheet. or FAQ here

One advantage is it lasts more than 2 years, unlike the popular blue coloured antifreeze. As stated in this thread I have conversed with the technical department of the manufacturer and am happy to use it.

[Keith Clements]

http://www.classiccoolant.com/page_2801222.html

Thanks for all the work on updating the recommendations for best anti freeze .
I thought you might find this article interesting, especially the use of Fernox by the writer.

Cheers

Cyril White

We have three parameters to consider. The mixture of metals and rubbers and silicone, the toxicity of the antifreeze and the effectiveness of the inhibitors with the water. 

In Jowetts we probably have the full gamut in the water system. The toxicity is your choice and the inhibitors are very difficult to choose correctly. I went with the answer from the inhibitor manufacturers technical department. Stories about leaks do not sway me . I need experimental comparative evidence as defined by standards tests.

I was confused in that article where he claims distilled water is the most corrosive. I use rainwater which can be slightly acid but I live in a hard water area. I can also use softened water where once again I was confused when he claimed it contained salts. Whilst salt (I assume here the writer meant NaCl) is used to flush the filtering system it is not in the filtered water. https://en.wikipedia.org/wiki/Ion-exchange_resin https://en.wikipedia.org/wiki/Salt_(chemistry) But not being a chemist I would have difficulty arguing. By gut feel is that distilled water is best . de ionized second best with rainwater a close third. There is also an argument that hard water might coat the aluminium and steel with a thin layer of scale which although this would reduce heat transfer might protect from corrosion.

The 1% of ethylene glycol in the oil will cause bearing failure compared to 8% of propylene glycol is a good reason to use propylene even without the toxicity issue. 4ml is a small amount and that will kill a cat! Propylene glycol is available at about £3.20 a litre try ebay. But then you need an inhibitor then this Fernox propylene and inhibitor MIGHT be suitable. https://www.fernox.com/inhibitors-prote ... otector-5l but use with the system cleaner and system neutraliser.

Remember where all this started with a conversation with Evans whose system of waterless coolant requires perhaps 7 litres of Classic Cool 180 at £95 plus the prep fluid at £16.

For some more technical info there is Wikipedia

I would not recommend the use of Fernox (which I do use in my house heating system) as there is no evidence it does not attack silicone or other components found in vehicle systems.