help milkshake oil coming out of prop what is it

[mrpike1973]

hello went fishing today moter fine when i take it out milkshake oil all over in the prop and dripping out a weep hole? i took the drain and fill plugs out no metal in it oil clean shifts fine could this be a prop seal bad its a 1975 johnson 9.9 can this be fixed or im i doomed i know its hard to tell how much money but i'm i looking at 300- 700 bucks help please ease my mind

[boatfixer]

Did you say the oil was clean when you pulled the plug? or was it milky too?

[mrpike1973]

hello the oil was as clean as the day i put it in there no milky look what so ever

[Esoxmn]

you could have a leaking seal

[caseymcq]

It could be a leaking prop seal. That shouldn't be too expensive. I don't know exactly how much it would be but I don't think it would be $300. It could also be a leaking water pump gasket. That also wouldn't be too expensive.

[boatfixer]

If the oil was clean, then I'd say its a combination of unburned gas/oil mix and the water from the exhaust.

[marine_man]

How much fluid was in the lower unit when you pulled the plug?

marine_man

[mrpike1973]

the oil was full when i took the top screw out oil started to ooze out immediatly so yes the oil was full

[Hafnutz]

the oil was full when i took the top screw out oil started to ooze out immediatly so yes the oil was full

You need to pull the bottom plug and see if the milky stuff comes out there. Oil will float on top of the water and the water will settle into the bottom of the lower unit when it's not running. If the milky stuff comes out the bottom plug my guess is it's a bad prop seal.

[mrpike1973]

i took the bottom one off also and drained it there was no water or milky looking oil i refilled with fresh gear lube i think it may be the unburned oil thanks for all the help everyone is there any way to prevent the unburned gas oil? or know for sure this is it

[para1911]

My 78 Johnson has the same deal. Unburnt fuel/oil on inside of prop hub. Has done this for a very long time. Runs top notch so I put up with it. Notice it after backtrolling a lot witch makes sense.