Df 90 oil slick

[Atjahn]

I’ve owed this df 90, year 2001, for a free years. It’s left a small amount of oil at times after idle. Checked the oil dip earlier this week and found it over filled and slightly milk chocolate. Not sure if there was water intrusion so I drained the oil and refilled. Ran it for an hour today, oil looked great but still seeing a slick behind the boat . Any thoughts?

[Atjahn]

Update, put 6 more hours on it over the weekend, about an hour at WOT and 5 hours trolling/idle speed. Oil looked great and I did not notice any oil. I guess I’ll continue to check it each outing.