I ran my outboard on muffs today at idle and got this around the prop and through the prop also. It is a ’95 mercury 40hp 2 stroke 4 cylinder. I bought it over the winter. I have gotten this milky gray sludge on my previous smaller outboard but this seemed like a lot. Is this just unburned 2 stroke oil and gas or do I have other issues or some kind leak?
It seemed to idle just fine. I changed the lower unit lube earlier this spring and it didn’t appear to be milky or have any water in it.
Thanks for any insight!