Hello I am new to this forum and want to thank all in advance who answer. I have a 1991 Rinker 260VEE with a 5.7 with the ALPHA 1 outdrive.I have been able to fix my tach thru this forum and I thank you all. I reset switch in rear of tach wasn't fully on 8cyl now it reads good. What I noticed in while boat was in well near prop area was some oil I think near prop area while motor was running while in neutral. The previous owner said the gimbal bearing, steering cable, exhaust bellows and steering cable bellows were replaced last year. I don't see any water intrusion in the bilge area. I don't see any oil or sheen on water in bilge area. This sheen I see on water is this normal or do you all think there is some sort of gasket leak on outdrive or somewhere else. After motor runs for about 5 minutes it seems to stop...any ideas are greatly appreciated.