Personally, I do not think it makes any difference. It is more important to maintain your typical pre-shot routine. If that means wiping the ball before every shot then just keep doing it. Any oil that is on the surface from the previous shot will have mostly "soaked" in to the cover anyway by the time your next turn comes up in league (unless you are using polyester or urethane.)
I experimented with adding the wiping of the ball to my routine at one point during my bowling "career", but ultimately found no value to it.
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