Quote:
Originally Posted by bruggz351
Ok, I am ready to replace the coolant (Tap water ) In my XJ. I have a bottle of NULON Ultra Cool concentrate, but I have come accross a cheap readymix that is eth/gly free. It has corrosion inhibitors, lubricants and rubber conditioners in it.
What are your thoughts?
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Tap Water
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How did you go bruggzy ???
Did you compare the products ?? ... Basically, the Nulon concentrate should give you the same thing as a pre-mix Type B coolant with no eth-gly.
If it has minimal or no eth-gly it is a Type B coolant.
A quality brand Type B coolant
should have all the anti-foam agents and corrosion inhibitors that a Type A coolant has.
Some brands may sell an "inhibitor" concentrate ... that is
only a soluble oil and not the chemical cocktail.
Type A coolant gets percentages of eth-gly added .... and the extra chemicals to keep the eth-gly under control.
Quote:
Originally Posted by XJeepers
Wouldn't use anything but demineralised water myself.
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For
short term use ... and followed by a good flushing ... Its not such an issue ..... but chlorine and all the other council provided goodies ... In a vehicle cooling system ... Over the long term ... No ThankYou
Quote:
Originally Posted by XJeepers
Not sure what the "eth/gly free" coolant is you are talking about, but I wouldn't use anything but eth/gly in my XJ. No other reason than that is what the service manual calls for and I do not know what the effect of running a non eth/gly coolant would be on the system, somone else might be able to expand on this.
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Quote:
Originally Posted by XJeepers
Running 30/70, the first thing I noticed was that the system was running only a couple of degrees cooler, but the big thing I noticed was it spent less time at the 100 degree point. I didn't expect this last point, but it stands to reason that if the system has more water, it will be more efficient in sheding the heat.
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Google ... Aust Std 2108 2004 Type B "
coolants" ... suitable for use in cast iron engines ... or any engine for that matter .... but the pooncy alloy ones do benefit a bit from the thicker viscosity of the liquid when a bit of eth-gly is added to the mix ..... as long the radiator size and cooling fans make up for the increased running temps caused by the eth-gly poor heat shedding ability.
The service manual calls for 50/50 eth-gly/water mix because some of the service centres that use the manual have -30* winter temperatures .... and its a northern hemisphere, average, ratio mix suitable for a range of vehicles & engines ... "Average" being the thing that should be most understood.
Quote:
Originally Posted by XJeepers
If you don't get all the old eth/gly coolant out in it entirety I would be worried about the chemical reactions I have heard so much about (some scream "truth" and others scream "myth", but I don't have the $$ to use my rig for R&D).
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Its not the "old" eth-gly thats the issue ... its the worn out additives. Basically .. a 5yr "
coolant" is only a 2yr, 3yr or 4yr "
coolant" if the system is not properly flushed.