Xeno wrote:   
   >I would avoid dish detergent if I were you. It generally has a pH that   
      
   ________   
   Funny you should mention that!   
      
   When I picked up my 2010 Accord three months ago, well detailed inside   
   and out, clay-buffed exterior polishing, etc., I noticed something odd about   
   the exterior glass:   
      
   When I squeegeed the morning dew off the windows, I noticed something:   
   It was as if my squeegee(and I have more than one) was riding a thin   
   layer of *something* over the glass!  After a pass of the squeegee, the   
   glass was dry, but there were almost oily remanants and the outlines of   
   thousands of droplets of water still on the glass.   
      
   Now, in May, most of that has worn off, especially in the obvious location   
   where the wipers take care of the windshield.  But what WAS THAT all   
   about?  I never got a car back, in my lifetime, from a washing/detailing   
   where the outlines of water droplets remained on the glass, even after   
   using NAPA pro auto glass cleaner over it.   
      
   Did the carwash that my dealer has a relationship with have an issue   
   with the balance/quality of the water at their location?  High metal content?   
   PH too high or too low?   
      
   That was not the issue with the paint though.  Aside from the usual minor   
   scratches and dings expected on a ten year old car, the water three months   
   later still beads and rolls right off, just by moving the car.  But that   
   glass??   
      
   What the?...   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)