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Radiator fluid


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If you used it, the Peak "Sierra" is the same exact thing as Engine Ice but about 25% the cost. 75% cheaper, in other words. Engine Ice is simply 50% Propylene Glycol with 50% distilled water. I think you can make 2gallons of Sierra with DW at 50/50 for about the cost of one of those tiny bottles of Engine Ice.

Edited by Eddie8v
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  • 2 weeks later...

Distilled water is the key. I run it with anti corrosion/water pump lube with no glycol at all. But it doesn't freeze in CA where Im at.

Yes.  Distilled plus water pump conditioner with a couple capfuls of Water Wetter.  No need for ant-freeze unless very low temps.

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