Can I mix ordinary tap water with Timberline antifreeze coolants?

Whenever Timberline Brands LLC mixes the base fluids to create our antifreeze coolant products, we always use water that has been purified by a reverse osmosis process.  This ensures that we are not adding any hard metals or other salts into our antifreeze coolant mix – salts are normally used to soften water in city water supplies.  “Over a long period of time, the minerals in some tap water can form deposits inside the radiator and the cooling system passages of your engine.” (Carchex BLOG)

Yes, tap water is commonly used for mixing with antifreeze coolants, however, we prefer de-ionized water or distilled water (Peak agrees with us, see their FAQ here).

Of course, instead of worrying about mixing our Concentrate HDLL antifreeze coolant with your own water, you can use our Pre-Blend HDLL Antifreeze Cooolant product.

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