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Use distilled for BEST results (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by Doug G on October 07, 2001 at 13:13:18:

In Reply to: Re: NEED HELP ASAP - Radiator Question!!!! posted by a on October 07, 2001 at 13:08:39:

Tap water contains dissolved solids (calcium, chlorides, sulfates, iron, etc.) that can affect corrosion inhibitors. If you want whats BEST, then use distilled. I do. Distilled water is the same as "deionized" and you can buy it at any grocery store.

On the other hand, using tap water probably won't cause a noticable difference, but why risk it?

Doug


Trying to finally fix my radiator problem. One question I forgot to ask the board was if it was ok to use tap water in my radiator or should I use distilled? I'm using the BMW phosphate free antifreeze and doing a 50% dilution. I know I could use tap water if I had to (I've certainly done that in other cars) but I want to do what's BEST. My bentley is in storage and can't get in touch with my usual BMW resource buddy. The radiator is "bone dry" right now...would that make a difference? TIA

Patrick
88 535i 104k

the purists would have you using distilled water, i have been using iron rich wellwater for over 20 years without apparent harm.




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