I've been reading about this for quite some time, and guys using windshield washer fluid or just water.  I have hurt two of my Ford trucks in the past on wmo but have put 10's of thousands of miles on them before signs of the piston rings seezing up.  I farm and use wvo and wmo in tractors too.  Even a VW with a 1.9 tdi.  I appreciate the insight from your experience.  Only thing I can think to add is if your engine has a turbo is adding the WI after the turbo or in a way water won't go through the trubo.  I like simplicity.  I'll be shopping eBay today

do you still have your engines for sale?