britishtrident
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| posted on 2/1/11 at 02:41 PM |
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Some good info on Glycol Coolant
Some good hard info why it isn't a good idea to fill your rad with high concentrations of glycol coolant, it applies equally well to
Ethylene Glycol and propylene glycol.
From Rolls-Royce Merlin entry on Wikipedia http://en.wikipedia.org/wiki/Rolls-Royce_Merlin
Another improvement, allowing the XX and future Merlin variants to run some 70 degrees C cooler, was the use of a 70/30% water/glycol coolant mix
rather than the 100% glycol of the earlier versions. This substantially improved engine life and reliability, removed the fire hazard of the flammable
ethylene glycol.
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MakeEverything
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| posted on 2/1/11 at 04:01 PM |
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quote:
Originally posted by britishtrident
Some good hard info why it isn't a good idea to fill your rad with high concentrations of glycol coolant, it applies equally well to
Ethylene Glycol and propylene glycol.
From Rolls-Royce Merlin entry on Wikipedia http://en.wikipedia.org/wiki/Rolls-Royce_Merlin
Another improvement, allowing the XX and future Merlin variants to run some 70 degrees C cooler, was the use of a 70/30% water/glycol coolant mix
rather than the 100% glycol of the earlier versions. This substantially improved engine life and reliability, removed the fire hazard of the flammable
ethylene glycol.
I thought that was common knowledge though, and manufacturers recommendations on Glycol that ive purchased for closed water systems has always
specified the dosage.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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Bluemoon
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| posted on 2/1/11 at 04:32 PM |
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I have heard of people running at 100%.. Not on this forum though..
Dan
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britishtrident
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| posted on 2/1/11 at 05:06 PM |
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Evans coolant from the published info on the net working from the boil and freezing points is near 100% Proplylene Glylcol ---- snake oil.
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prawnabie
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| posted on 2/1/11 at 05:56 PM |
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I wouldnt take anything of wikipedia as hard info!
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Ninehigh
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| posted on 2/1/11 at 11:58 PM |
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quote:
Originally posted by prawnabie
I wouldnt take anything of wikipedia as hard info!
Wikipedia, the internet version of the "bloke down the pub"!
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bimbleuk
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| posted on 3/1/11 at 08:15 AM |
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quote:
Originally posted by MakeEverything
I thought that was common knowledge though, and manufacturers recommendations on Glycol that ive purchased for closed water systems has always
specified the dosage.
Maybe now but the engine was designed in the 1930s!
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britishtrident
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| posted on 3/1/11 at 09:35 AM |
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quote:
Originally posted by prawnabie
I wouldnt take anything of wikipedia as hard info!
readd the article before making comment the article references an authoritative source for that particular piece of information.
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bigpig
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| posted on 3/1/11 at 10:37 AM |
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The link to the actual Ethylene Glycol reference is quite good. Discusses why a 50/50 mix is good for car use due to increased specific heat capacity.
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