Magnets
 

This is rather interesting.

Very good link there (said a year or so later :smile: )

yes, indeed. interesting reading.

Has anyone else heard of PiMag water?

We have a Nikken PiMag water filter (Japanese), that does more than just filter water (allegedly) :smile:

I also have a book on PiMag water, which contains a brief reference to PiMag water being used to enhance the performance/economy/emissions of big truck diesels... but as usual, no great detail about 'what' is going on or 'how' it is being used.