coolant

[AHB]

Hello!
Six moths ago I replacent my car coolant ( green coolan) . Today I have just recognized that the coolant I used was concentrated 94 – 96 % not 50/50 mix. Should I replace it with 50/50 mix. Would the concentrated mix harm the engine or the radiator ?

Thanks

Topic

[Bill]

It’s not likely that your concentrated coolant will cause a problem. Coolant years ago would sometimes separate and the heavy components would migrate to the lowest points and turn to jelly but I don’t think that happens anymore.

You could have it tested at any place that has a coolant hydrometer and adjust it accordingly.

A rule of thumb is 1qt of water added will change the mixture by 10F .

[Lorrin Barth]

The mixture you are running freezes at -10 degrees Fahrenheit. Depending on where you live it could become an issue this winter.

[dan]

if you put too much glycol in it won’t hurt it i don’t think…

[Ingvar]

Non- diluted coolant has higher expansion ratio. That’s it. You may end up with some overflow. Otherwise, as it does not have added water, it has lower freezing point than diluted one. Just let it be. If eventually level falls lower add some water.

[Ingvar]

Btw, before you freak out over -10 degree remark:

PEAK® GREEN Antifreeze & Coolant is providing maximum freeze-up and boil-over protection.

Specific benefits include:

Maximum freeze-up/boil-over protection -84°F to +278°F

[Lorrin Barth]

Not a remark, it is a fact. Freezing point depression occurs when two solvents are mixed together. As you get toward the other end of possible mixtures, more and more ethylene glycol, there is less water in the mix and less freezing point depression.

Maximum freezing protection occurs at about 60% ethylene glycol. Go beyond the 60 percent concentration and the temperature the mixture freezes at rapidly increases.

[Author]

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