looks like oil in exhaust

[toadaly]

not sure the year of the outboard but would guess late 70's. its a 4hp. I havn't used it in years because the last time i used there was something spitting out with the exhaust it was white and lumpy floated on top of the water...it looked like oil with water in it. any ideas what would be causing this. would love to use this motor again.
thanks,
T

[boats.net]

The only oil is oil mixed in gas or lower unit oil. Check oil mix is correct and check lower unit for leaking seals.