Thoughts on deionized water in the radiator?

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Thoughts on deionized water in the radiator?

351FUN
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Re: Thoughts on deionized water in the radiator?

81-F150-Explorer
Distilled water should be used as minerals and additives in tap water can breed rust in the cooling system.

Truck: 1981 F-150 Explorer / Engine: 300-6 California MCU Feedback System / Trans: T-18 - 4 speed / 2.75 Ford Rear Axle Open Diff.
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Re: Thoughts on deionized water in the radiator?

ratdude747
DI water, in terms of rust prevention, is as good as distilled. Distilled removes organic impurities in addition to inorganic (ionic) impurities, but many DI setups have a prefilter that knock a lot of those down, making it equivalent in this application.

So yes, DI or distilled water for mixing with concentrated antifreeze. Tap water is for flushing only.
1984 F150: 300 L6, AOD, RWD. EEC IV / TFI, Feedback Carter YFA Carb. Stock everything but radio (for now).
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Re: Thoughts on deionized water in the radiator?

351FUN
Not sure how I accidentally deleted the OP, but that's good to know.  I'll keep that in mind