Real good read Rodge .... and I trust parts 2 & 3 will be equally as good.
Couple of discussion points .......
Quote:
Originally Posted by Rodgebone
....it should be a 50/50 mix of alloy-friendly ethylene glycol/distilled water
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50/50 antifreeze is a northern hemisphere ratio ....
ideal for -37'c temperatures .... but only
satisfactory, in constantly warmer climates unless the cooling system is designed for 50/50 AND the climate.
Yes yes everyone ... new holdens & fords specify it
now too ... and what continent are those companies head offices and rulemakers at ????
If you choose to use 50/50 anti-freeze -
ensure your cooling system is
top notch ...
Quote:
Originally Posted by Rodgebone
Watered down coolant will lower the boiling point and raise operating temps.
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Definitely lowers the boiling point ...... by less than 3*c at 0psi actually .... but wont nescessarily raise operating temps - as lesser ratios of eth-gly to water, cool better.
50/50 doesnt shed heat in the radiator as efficiently and goes back to the engine hotter than what a 30/70 mix, or less, will - from the same radiator.
Watered down 50/50 is
definitely incorrect to use because that means the additives have also been watered down ... but a
quality, commercially available 30/70 anti-freeze pre-mix, will have all the correct corrosion additive amounts to protect your aluminium radiator, and some for the cast iron ..... per litre of fluid ... for those that choose to use it.
Quote:
Originally Posted by Rodgebone
Also replace the thermostat every 2-3 years as preventative maintenance and make sure you ONLY install a 195*F unit - DO NOT USE ANY OTHER TEMP-RATED T-STAT!
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Like the minimally efficient cooling system which is designed for much lower average temperature use than here ..... so is the thermostat heating device.
Either
ensure the cooling system is capable of not allowing the engine temp to get above the initial danger point indicated by the temp used by the PCM to operate the aux fan,
Or run a lower temp thermostat that provides a lower, constant, engine running temp that doesnt interfere with the vehicles normal running requirements.
Polite enough so as not to start a war I hope Rodge ...