I must admit that I was extremely skeptical about bowling balls absorbing lane oil and affecting the hook. Now I'm not so sure.
I bought a Mission 2.0 and it was hooking almost off the lane compared to my Nano (supposedly a stronger ball). That got me thinking a little bit.
Next I read this article:http://www.utahbowling.com/news/brunswick.html
(I hope I haven't broken any forum rules by posting the link. It would seemingly not create any conflict.)
Now to the experiment:
I cleaned my Nano with rubbing alcohol then brought it inside and tried a hair dryer on the surface. The surface became shiny wet almost instantly. I wiped it and used the dryer again and got some more liquid.
At that point, I took the ball out to the garage and put it in the ball spinner. I then turned on the spinner and pointed the hair dryer at the ball then used a towel to wipes
the ball as the surface became shiny. I did both sides then cleaned the ball with the Reacta Clean that Storm recommends. I then repeated the hair dryer process. The ball surface instantly became wet again.
I repeated the process with my Columbia Pure Physics with the same results.
Neither alcohol, Reacta Clean nor Power Wash removes whatever the substance is that rises to the surface of the Nano / Pure Physics when it's heated.
I am now a believer that the surface does absorb oil. I don't think that plasticizer would rise to the surface as quickly as this stuff did from just a little bit of heat. It was almost instantaneous.
Ball ovens are way too expensive to consider although it might make for a business opportunity. The hair dryer routine would be too time consuming and too imprecise to be effective as a regular routine. A couple heat lamps might work?