PK 18 does not absorb any more oil than any other dull resin or particle coverstock.

If yours was in box condition and everything you say above is true, it has more than likely absorbed a lot of oil and this should have affected it performance to a medium degree. It should be obvious. Even Brunswick says resin balls should be rejuvenated (have the oil extracted) ever 60-90 games.

What does this have to do with drilling?
Clean the ball, sand it with 800 grit and throw it down the middle with your normal release. It should be easy to see your initial track. Take it to a good pro shop and they should be easily able to find your PAP for you.


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"Just because you can do something does not mean you should do it."

a_ak57 -- If you're not able to locate your track, place a piece of white tape about 4 1/2 inches horizontally and 3/4 inch vertically away from your grip center on the side of the ball away from the track.  Then have someone watch you roll the ball (very difficult to see the early travel of the ball yourself).  If the tape appears stationary for the first 15 feet or so of travel, you were lucky enough to hit your PAP on the first try.  More likely, you will have to adjust the location of the piece of tape and throw again.  Your observer will be able to tell if the tape is rotating more or less than the first time.  Keep adjusting the location of the tape until it appears stationary for that first 15 feet of travel.   When you finally have the correct position of the tape, measure horizontally and vertically from your grip center to the tape.  Those are your PAP measurements.  Your pro shop operator should be glad to help you, and he will probably be able to identify your track.  Good luck  --  JohnP