I have a 05 yamaha 70hp 2 stroke. I fished the Mississippi river this morning, and after I pulled the boat out I noticed a little trickle of oil coming out of the intake screen on the lower unit. I wiped the oil off, pulled off the screen, and cleaned it out. I let is sit for a couple of hours, and no more oil come out. I then ran down to my local dealer and bought some lower unit oil, and changed the oil. It had about a a quart of oil in it, with about maybe a 1/4 -1/3 cup of water. The mechanic told me that 1 teaspoon of water was normal. Any suggesstions? I'd like to run it again to see it anymore water gets in the oil. The motor has only had 4 tanks of gas run through it, and it had the original oil in the lower unit. The only bad thing is, the factory warranty expired about a week ago.