Originally posted by Tom McC:<br /> I just acquired a 1958 Evinrude 35hp. I put it in the water and little oil bubbles came up after it started. I pulled it out and ran it with the hose attached. A thin brown oil appeared just above the water intake dripping out. Is this lower unit gear oil? If so, where should I start to look for problems. I am new to older outboard repair. Just looking for a place to start.