I got oil all over my serpentine belt on my 496 ho and I took the belt off the pulleys and soaked the belt in soap water. Should I reuse this belt or buy a new one? Belt has 30 hrs on it and no signs of damage. I put the belt back on and it seems ok but at high rpms it might slip? What does everyone think?

First correct the problem that caused oil to get on it in the first place. (front cover or P/S seal) That is if you didn't accidentally pour it on the belt. If this were a car I would say clean and re-install, but since it is a boat i say replace it. If the belt was totally saturated for any length of time replace it. If it was hydraulic oil or P/S oil replace it.

Roby