eddystone
Well-Known Member
Just rechecked Beta specification for antifreeze - mono ethylene glycol extended life. Neither Europarts nor Halfords stock this. Any ideas where I can get it? Not absolutely urgent so online OK
Anti-freeze again
- Thread starter eddystone
- Start date
VicS
Well-Known Member
Yes they do
Its the OAT ( organic acid technology) type also sometimes called "advanced", "extended" life or "long life"
Unless you go out of your way to find a propylene glycol ( low toxicity ) antifreeze its all ethylene glycol ( proper chemical name ethane-1,2-diol )
Unless your tap water supply is soft and very low in dissolved solids you should dilute it with distilled or deionised water ......... or simply buy it ready diluted.
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Davy_S
Well-Known Member
What about Prestone antifreeze, it is supposedly safe for all types and can be mixed.
lw395
Well-Known Member
I think that's common or garden long life antifreeze. e.g.
Super Longlife Red - Antifreeze : Antifreeze & Coolants : Products Guide : Moove Lubricants Limited
Deionised water seems hard to find at the moment! Even harder since I've bought 3/4 of the stock in my local Bean Queue.
Super Longlife Red - Antifreeze : Antifreeze & Coolants : Products Guide : Moove Lubricants Limited
Deionised water seems hard to find at the moment! Even harder since I've bought 3/4 of the stock in my local Bean Queue.
eddystone
Well-Known Member
That would seem to fit the bill
Catalina36
N/A
I've often wondered why different engine makers recommend different antifreeze. Surely they're all made out of the same cast iron and brass bits and work at similar temperatures and pressures?
tillergirl
Well-Known Member
VicS
Well-Known Member
Halfords appear to have it avaialble . At £3.90 for 5 litres ITYWF Thats less than B&Q's price
Iliade
Well-Known Member
I have a reverse osmosis system at home as a result of the lad's tropical fish. Similar technology to water makers and dribbles out very pure water. Would a water maker produce sufficiently pure water I wonder?
lw395
Well-Known Member
Bit late for me now, but 3l out of B&Q's 4 litre stock for £3.24 saves me 66p and avoids the need to make space for a 5litre can on my shelf for the next 2 years!
Of course I should probably change the coolant in one or two other vehicles before long.
lw395
Well-Known Member
The dehumidifier produces water with presumably few minerals, just a bit of fluff and mould....
Now just got to get rid of the old coolant...
eddystone
Well-Known Member
Find it very frustrating that engine suppliers very specific about their anti freeze requirements whilst anti freeze brands determined not to to tell you what’s in it. Just say things like NAP free (Halfords) or silicate free (presume that is a good thing). I used to think OAT and MEG where different but seems OAT is ethylene glycol. The Comma ones are OAT and ehthylene glycol but are they mono?
superheat6k
Well-Known Member
I use 25% neat MEG from these people BLUE ANTIFREEZE & COOLANT | 20 LITRE | -37 ºC | High Concentrate/Longlife | 20L 642968734780 | eBay then dose with Cummins DCA4 anti cavitation additive. Works for me in my Cummins 6BT5.9M engines.
VicS
Well-Known Member
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thinwater
Well-Known Member
NAP. Nitrite and phosphate. These can lead to problems with solder bloom (corrosion) and aluminum corrosion (radiators). Can be EG or PG.
Monoethylene glycol. As opposed to diethylene glycol, which isn't used in coolants anyway. Just ethylene glycol.
There is no important functional difference between ethylene and propylene glycols, other than mammalian toxicity.
Reducing the concentration below 50%, even if freeze protection is not needed, reduces corrosion protection. All studies and specs are based on this. Your funeral. Engine manufactures spec 50% for this reason.
Dehumidifier and home RO (not seawater) are fine. Air conditioning condensate is variable. NEVER softened water (treated with salt). Distilled water, of course.
OAT. Organic acid technology. Means the primary corrosion inhibitors are selected from a group of di-carboxilic acids. Generally means extended life, although that phrase has never actually been defined in a standard (fact). Can be EG or PG. No, they are not going to tell you what is in it because that is proprietary., but 2-ethylhexanoic acid (2EH) is very common, along with buffers and red metal inhibitors and a trace of silicate.
Remember that extended life has NO MEANING in marine applications, only vehicle applications. Because of the risk of seawater contamination, which just a few percent invalidates the extended life character, it should be either tested for chloride (not chlorine) every 2 years or replaced.
(Many years active in engine coolant chemistry)
Monoethylene glycol. As opposed to diethylene glycol, which isn't used in coolants anyway. Just ethylene glycol.
There is no important functional difference between ethylene and propylene glycols, other than mammalian toxicity.
Reducing the concentration below 50%, even if freeze protection is not needed, reduces corrosion protection. All studies and specs are based on this. Your funeral. Engine manufactures spec 50% for this reason.
Dehumidifier and home RO (not seawater) are fine. Air conditioning condensate is variable. NEVER softened water (treated with salt). Distilled water, of course.
OAT. Organic acid technology. Means the primary corrosion inhibitors are selected from a group of di-carboxilic acids. Generally means extended life, although that phrase has never actually been defined in a standard (fact). Can be EG or PG. No, they are not going to tell you what is in it because that is proprietary., but 2-ethylhexanoic acid (2EH) is very common, along with buffers and red metal inhibitors and a trace of silicate.
Remember that extended life has NO MEANING in marine applications, only vehicle applications. Because of the risk of seawater contamination, which just a few percent invalidates the extended life character, it should be either tested for chloride (not chlorine) every 2 years or replaced.
(Many years active in engine coolant chemistry)
eddystone
Well-Known Member
That’s very informative and explains in a way I haven’t seen elsewhere - thank you
RichardS
N/A
Refueler
Well-Known Member
MEG ... DEG .... PEG ...... sorted out hundreds of thousands of tons of the stuff .....
MEG is basically the only Ethylene based Glycol used in Antifreeze.
Come over here with our winters and you put neat Antifreeze in your cars systems - no water !! - (for boats its recc'd to drain the whole systems down here before winter ) .............. In the screen washers - its neat -30C fluid (not MEG of course).
MEG is basically the only Ethylene based Glycol used in Antifreeze.
Come over here with our winters and you put neat Antifreeze in your cars systems - no water !! - (for boats its recc'd to drain the whole systems down here before winter ) .............. In the screen washers - its neat -30C fluid (not MEG of course).
VicS
Well-Known Member
Why would you do that?
The freezing point of of neat ethylene glycol is only -12.8C compared with -37.8 for a 50% solution
Also the specific heat is only 2.7 kJ /kg/°C compared with 3.7 kJ/kg/°C , making it a less effective heat transfer medium
and the viscosity, at engine operating temperature, is approx 2.3 centiPoise compared with approx 0.7 meaning it will require greater pumping power
Refueler
Well-Known Member
Did I say neat MEG ? I said neat Antifreeze ... that is to put it simply :
We walk into shop. hand over the money for a plastic 5ltr jug of Anti-freeze with -40C written on it. We then pour that in to system ..
Unlike when I lived in UK and I used to pour in so much AF and so much water ..
Wasn't aware that you could buy neat MEG in a car shop or petrol station ...
Happy now ?