CentralCoaster wrote:
CFI,

Peak recommends distilled, Prestone uses distilled in their pre-mix, as do others I'm sure.

Dissolved solids will deteriorate the coolant faster and leave debris in the radiator. I contend it will ruin your system way before distilled water will.

Regular maintenance is almost always more important than what fluid/oil/lube you use. But to even suggest not recommending distilled water is stupid. Especially when it costs $1 per gallon at the grocery store.


Anyways WISE GUY with the perfect maintenance record and original radiator, why don't you tell us about your heater core that leaked?

I'm not going to let you join my "original heater core" club.