Took the boat out for a few hours today. Ran great. Its a 1999 Johnson 50hp. First thing I noticed that was strange though is that when trimmed up at one of the islands, the motor slowly returned all the way down into the water. It is doing this now so I figure more hydraulic fluid needed in the T/T motor? It trims up and down quick but when left up it slowly returns with gravity. Second thing I noticed was when flushing the motor at home. After running it for about 15min I noticed a brown/gray line of foamy oil or grease running down the skeg from the prop area. I dont know if a seal is broken or something? Im not a mechanic and before I call mine I figured I would ask here. I dont know if something inside the lower unit happened? Like I said, it ran good. I did bottom out(at a snails pace) coming up to an island and the motor stopped but that was quick and it fired up after and ran great. Photo of the substance is attached. Side Note: Tons and tons and tons of lovebugs at Parish Park and throughout the IRL.