Thursday I hooked my two stroke boat motor to the hose and ran it to get ready for my trip on Friday. I run the engine the night before for two minutes then turn it off and restart it twice more because I fish a river with current and I need my motor to start as soon as I push off the dock.

I then left the boat in the driveway hooked to the truck overnight. I went fishing Friday and everything went well. I then put the boat in the garage when I got back.

I noticed a oil spot in the driveway where the boat was yesterday. It was still wet and looked like it was about a teaspoon worth.

I checked in the garage and the boat did not leak oil before or since.

Is this oil residue left over from running the motor in the hose. I don’t see how a two stroke can leak oil since it is mixed in the gas.

I would say it may be the gear lube but it did not leak before or after in the garage.

Should I be worried???

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Posted by Fat Batman

Gotham City, NJ

Member since Oct 2019

1382 posts

Posted on 6/26/21 at 9:52 am to bird35

Too much oil in the gas or too rich on the carb can cause oil to "leak" out the exhaust

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Posted by auggie

Opelika, Alabama

Member since Aug 2013

27969 posts

Posted on 6/26/21 at 9:57 am to bird35

Is it oil or foot lube? If it's oil, it's just unburned oil, you may need to pay closer attention to your mix. If it's dope that could be a problem.

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Posted by bird35

Georgia

Member since Sep 2012

12179 posts

Posted on 6/26/21 at 10:25 am to auggie

Since it only leaked when running and not before or after I think it is oil and not lower unit gear lube.

I had a gear lube leak two years ago and it was a slow, steady drip in my garage.

I mix 11 ounces of oil in 4 gallons of gas. It this to much?

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Posted by deeprig9

Unincorporated Ozora, Georgia

Member since Sep 2012

64023 posts

Posted on 6/26/21 at 10:34 am to bird35

That's about 1 oz too rich for a 50:1 mix.

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Posted by auggie

Opelika, Alabama

Member since Aug 2013

27969 posts

Posted on 6/26/21 at 10:36 am to bird35

quote:
I mix 11 ounces of oil in 4 gallons of gas. It this to much?

That's going to depend on the ratio of the oil that you use, and what your motor calls for. You can probably find the right mix online. If it's cranking fine and not fouling plugs or gumming up your carb, I would stick with what you are doing.

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Posted by Lsutigerturner

Member since Dec 2016

5798 posts

Posted on 6/26/21 at 12:02 pm to bird35

Depends what oil looks like, I would say it's prob unburned from the exhaust but unsure unless you can I'd what oil it is. Look at trim cylinders and foot also.

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Posted by Loup

Ferriday

Member since Apr 2019

11321 posts

Posted on 6/26/21 at 12:13 pm to bird35

Mine does that when I either run it on idle a while or hook it to the hose. It's from the exhaust

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Posted by TygerT

Member since Nov 2010

406 posts

Posted on 6/26/21 at 3:55 pm to bird35

Check on the bottom of the lower unit. See if it is coming out of the weep holes. Could be the shift shaft seals leaking. I had that happen to mine and that’s what it was.

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Posted by Langston

Member since Nov 2010

7685 posts

Posted on 6/26/21 at 3:59 pm to TygerT

Too much oil can also come out the hub and it looks more like lower oil when mixed with water. I’d check the mix out well before I fooled with the lower. It should be visible below the exhaust port or inside the prop hub though if it was enough to drip.

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