Ford 460 motorhome running hot

Chum lee wrote:

Lynnmor wrote:

Chum lee wrote:
"As a result of this, I am a believer in using only distilled water with a radiator."


Assuming that you mean distilled water MIXED 50%/50% with the appropriate antifreeze/coolant? (see owners manual)

Using deionized, RO (reverse osmosis) or, bottled drinking water is also fine as long as it is mixed with the appropriate coolant.

Stay with only distilled water, bottled water can have minerals and DI or RO can have contaminants if not handled perfectly.

Oh please. So it's good enough to drink, (actually preferred) but not good enough to put in your radiator. Yeah right. Where did you take your chemistry classes? That's what I thought.

What do you think happens to distilled water when it comes in contact with common metals found in any cooling system? (rhetorical question) You need not answer.

Chum lee

Mr. Chum lee,

I had the privilege of working in the ink business, where we did a lot of formulation of water based inks. Lynnmor has it correct. Distilled water is far better for your cooling system and batteries. If you do some PH research, you'll find that distilled water has less solids and reduced the PH of antifreeze far less than DI, RO or bottled water. We actually had RO and a boiler for distillation for some of our fussy inks. The distilled water always performed better for hard to formulate products. Why settle for less when we know what the best is.

Richard