#1
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Suitable coolant / Corrosion inhibitor.
Hi Guys,
What are the current mainstream thoughts on inhibitor? Glycol ethylene used to be the only option. Now we have Water wetter, green coolant, red coolant, and unknown numbers of various additives. I have had my recond. carrier motor running for about 6 months with just plain water in the system. It does not leak, but I need to put some kind of corrosion inhibitor in the system. I have alluminium heads fitted, composite head gaskets, torqued to 35 ft lbs (once) and standard water pump seals. The antifreeze is unlikely to be required with only the odd light frost in winter. I don't need any info on the likes of soluble oil. What's the advice?
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... |
#2
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I have been using the green coolant for many years without any problems with corrosion or water pumps.
Marco
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Staghound F215633, 12th Troop "Sergeants Car" XII Manitoba Dragoons |
#3
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Antifreeze is cheap, and has all the inhibitors and lubricants required. I say use that.
Antifreeze does require to be changed every 5 years or so as it will get corrosive over time. I have dealt with very low mileage vehicles but with very old antifreeze, and the results weren't pretty. Also, something a little newer is to test and adjust the PH level of your antifreeze. This has been available since the 80s as I recall, and isimportant, especially with the dissimilar metals of aluminum and steel. |
#4
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Another advantage of ethylene glycol coolant is that it raises the boiling point if you have any worries about overheating. I don't know the values for an unpressurized system like the CMP's but Prestone (brand name but often used as a generic name for antifreeze) claims 265 degrees F for a 15psi system (50/50 mix).
Last edited by Grant Bowker; 03-02-18 at 01:59. |
#5
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Grant, one pound raises boiling point by four degrees F.
So, a 15 pound system has a boiling point 60 degrees F. on top of the std 212 degrees (at sea level) As it happens Wartime Ford Carrier radiators are good for about 3.5 pounds. I am running an adapter with a 4 pound cap. So far so good. I believe there is a water wetter that has a higher boiling point than water. Is that the Prestons you speak of? Rob. Thanks! I was thinking of you when I posted. I will look into the PH test. It can be be done with an Ohm meter if I remember correctly. Can anyone give us a run down on it? Marco, I was considering the Green or Red, which apparently should not be mixed. Is one better than the other with regards water pump seal lube?
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... Last edited by Lynn Eades; 03-02-18 at 01:29. |
#6
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An ohmeter to test PH is a new one on me, but I do believe the PH level and the continuity may be related.
If you google antifreeze PH test, you will find a lot more about the subject. One article mentions that automotive parts stores will sell test strips. Apparently, water is fairly PH neutral at around 7, and AF is around 10. Mixed 50/50, the PH goes to about 8.5. The PH adjustment that the articles mention is to bring it back to around 10. Seems to me with the heavy trucks, we changed the coolant filters, and could adjust the PH through using a differently rated filter. I have always preferred the common green A/F. My wifes car (an Oldsmobile) requires the yellow stuff called dexcool, and that is touted as long life. It is also relatively expensive. I would venture to guess that you guys from the Southern Hemisphere don't have a lot of antifreeze experience. Up here it is mandatory.....a night outside with just water and you will crack your engine block. |
#7
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I've had motors with the same antifreeze in them for 40 years and there were no problems.
Don't mix colours on antifreeze. Use the proper type with aluminum heads. Heavy duty diesel antifreeze won't score cylinders if it gets past the O-rings on the sleeves.
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1940 Cab 11 C8 Wireless with 1A2 box & 11 set 1940 Cab 11 C8 cab and chassis 1940 Cab 11 C15 with 2A1 & Motley mount & Lewis gun 1940 Cab 11 F15A w/ Chev rear ends 1941 Cab 12 F15A 1942-44 Cab 13 F15A x 5 1942 cab 13 F15A with 2B1 box 1943 cab 13 F15A with 2H1 box 1943 Cab 13 C8A HUP 1944 Cab 13 C15A with 2C1 box 1943 Cletrac M2 High Speed Tractor MkII Bren gun carrier chassis x 2 |
#8
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I didn't run anti freeze during summer months, but rather distilled water and water wetter which has inhibitors in. the block was pristine clean ! it also ran cooler too
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is mos redintegro __5th Div___46th Div__ 1942 Ford Universal Carrier No.3 MkI* Lower Hull No. 10131 War Department CT54508 (SOLD) 1944 Ford Universal Carrier MkII* (under restoration). 1944 Morris C8 radio body (under restoration). |
#9
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Good day,
I use Caterpillar coolant in all my vehicles petrol and diesel, it is reasonably priced and does a good job keeping the coolant systems rust free. They also have an extender that you can use to recharge the coolant. We use it in our Cat engined machines and trucks at work that are left out in all weathers, the only problem we have is in cold weather when the coolant pipes shrink and then there is a small weep at the hose. We either tighten the clamps a bit or when the engine warms up and the pipes expand the weep stops. Ken
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1940 Cab 11 F15 1G-8129F 1941 Cab 12 C60L AIF L4710841 Middle East veteran 1941 Cab 12 F60L ARN 45818 1941 Cab 12 F60L ARN 46660 1941 Cab 12 F60L ARN 51720 A/T Portee 1942 Cab 13 F15 ARN 55236 1942 Cab 13 F60L ARN 58171 Mach "D" Loading 1942 Cab 13 C15 ARN 62400 1945 Cab 13 C60L ARN 77821 1941 Chevrolet 3 Ton GS ARN AIF L16070 Middle East veteran Canadian REL (APF) radar trailer |
#10
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The first thing I found on the net:
Quote:
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... |
#11
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A different angle:
Quote:
Quote:
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... |
#12
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__________________
Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... |
#13
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Ahh the mysteries of pH...
pH means Hydrogen Index. It is a German language term, like ABS!
The pH scale measures the acidity or alkalinity of a substance on a scale from 1 to 14 pH 1-2 is extremely strong Acid, pH7 is neutral and pH13-14 is extremely strong Alkali Examples of the 3 are stomach acid, distilled water and Caustic soda. Note that rain water is slightly acidic due to dissolved CO2 from the atmosphere about pH5.5 Coke is about pH3.5 which works like other acidic rust converters. Baking soda is weak alkaline, and is good for neutralising acid spills on car batteries and terminals. My reading of the quotes from Lynn is that we want stronger alkaline pH levels in our engines Cheers Rob long retired science teacher! Last edited by Rob Beale; 15-02-18 at 09:52. Reason: mis-read the article! |
#14
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You need to remember with Glycol (and many other additives) the cooling efficiency is greatly reduced over plain water and the increased boiling point is required. There is a considerable difference in temperature in an engine running additives and one running plain water under the same conditions.
Modern engines like a bit more heat to run efficiently but the old ones like their 180 degrees. So we now have high pressure radiator caps and high boiling point additives including the anti-corrosion ones necessary in alloy engines particularly. Lang |
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