![]() The messages express the views of the author of the message, not necessarily Or usefulness of any message, and are not responsible for the contents of any ĪJOR does not vouch for or warrant the accuracy, completeness altho freeze point shouldnt be an issue to you - unless you use the JK to deliver winter breakfasts for a few weeks - to a Jindabyne snowbunny resort. Unpressurised, Freeze and Boil points shown in this link. The trade off - for slight, operational, cooling benefits - is that the boil point of the coolant mix is lowered by a coupla degrees. and the performance of the protectants and other additives, added to the eth-gly anti-freeze. Using their Zerex G-05 at a 30/ 70 ratio is quite acceptable. altho 30/ 70 is still adequate for those temps too.Īccording to Valvolines tech dept. is a good all round ratio - for weather conditions similiar to Jonny Jeeps area - and colder. and then next time - swap brands to valvoline or someone else - who does a mopar equivalent mix. otherwise just get some more of the mopar stuff, to finish making up the mix. despite what the info - in a northern hemisphere, vehicle owners manual, stipulates. IF - you're happy enough, to run a mix of about 30/ 70. The bloke assured me I would have enough with one bottle. Also, a higher percentage of antifreeze can cause the engine to overheat because specific heat of antifreeze is lower than that of water.ĬAUTION: Richer antifreeze mixtures cannot be measured with normal field equipment and can cause problems associated with 100 percent ethylene. A higher percentage will freeze at a warmer temperature. Maximum protection against freezing is provided with a 68 percent antifreeze concentration, which prevents freezing down to -67.7☌ (-90☏). If percentage is lower, engine parts may be eroded by cavitation. Must always be a minimum of 44 percent, year round in all climates. ![]() In addition, 100 percent ethylene-glycol freezes at -22☌ (-8☏).ĥ0/50 Ethylene-Glycol and Water - Is the recommended mixture, it provides protection against freezing to -37☌ (-34☏). The increased temperature can result in engine detonation. This temperature is hot enough to melt plasticĪnd soften solder. These act as insulation causing temperature to rise to as high as 149☌ (300☏). Without water, additivesįorm deposits in system. Water also freezes at a higher temperature and allows corrosion.ġ00 percent Ethylene-Glycol - The corrosion inhibiting additives in ethylene-glycol need the presence of water to dissolve. This is for purpose of heat transfer only. Pure Water- Water can absorb more heat than a mixture of water and ethylene-glycol. The coolant performance of various mixtures follows: The required ethylene-glycol (antifreeze) and water mixture depends upon climate and vehicle operating conditions. They removed the ingredients from the label, and instead used the NJ Trade Secrets Act, to list some secret reference number.The coolant will work at 2/1 ratio but works best a 1/1 ratio.dĪgreed, 2:1 ratio is too weak, the antifreeze must make up at least 44% of the coolant mixture according to the FSM. Prestone has been sued and lost about their claim their anti-freeze was for all makes and models, mixes with any color anti-freeze, the court found they could not substantiate their claims, not to mention from all evidence if its not exactly GM Dexcool, its a minor variation of it. Maybe a few others, but most don't even tell you what type of anti-freeze is in the jug, and like Prestone, its likely the worst version of OAT, GM Dexcool. The aftermarket for antifreeze has gone nuts, Zerex is trustworthy, they actually tell you what is in the Jug. So if you're going to try something different, you really need to fully drain and flush your system. OAT doesn't mix well with anything, including many other OATs. HOAT mixes with IAT (the original green) very well, but if you mix them, you have to change fluid at the much shorter IAT interval. I use it and never have a problem, and usually its cheaper than the Dealer supplied HOAT. Likely because there are lot more Fords using it than Chrysler/Mercedes. Zerex G-05 is the aftermarket equivalent of Mopar/Mercedes/Ford HOAT, but its dyed the Ford Amber. The original green IAT used to go from translucent green to an opaque green as it neared the end of its life. As the Mopar HOAT coolant gets older and starts to wear out/break down/collecting solids in it, it tends to turn more orange. So if the part number digits are the same, using AC instead of the previous AB should be just fine.Ĭhrysler/Mercedes HOAT is dyed red, but depending on the light and background reflecting through the translucent coolant, it can look pink or orange. Perhaps there is a situation where that is not always true, but I have yet to see one. Same part number with an increased letter suffix is the same part just improved in some way. ![]()
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