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Frothy mocca brownish colored substance on dipstick
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Frothy mocca brownish colored substance on dipstick
Today I serviced the Dyna after a 1.500km Mascot ride into Germany. When I checked the engine oil level I found a mocca brownish colored substance in the dipstick plug and in the highest section of the transmission cover (see images below). The oil looks clean and has a good color.
During my trip last weekend I've had lots of rain. Could this rain (water in the engine oil) has been the cause?
Your advice is appreciated....
Last edited by FXD2003Rider; Apr 13, 2018 at 09:57 AM.
...When I checked the engine oil level I found a mocca brownish colored substance in the dipstick plug and in the highest section of the transmission cover (see images below). The oil looks clean and has a good color.
During my trip last weekend I've had lots of rain. Could this rain (water in the engine oil) has been the cause?
Definitely looks like water in the oil. No idea how it got in, though, but check the dipstick seal. I wouldn't run it until the oil is changed.
condensation, if it is not on the dipstick just in the cap its condensation.
yep, condensation. If it is only on the inside of the cap where not much oil gets, thats what it is. If you ride it a lot, don't worry about it, but if you put it up for the winter, change it before putting it to bed. Places where there is lots of moisture will cause this to happen. I find this in my bike occasionally (living in Louisiana, sticky) but riding a lot keeps it from building up, 98k on my 02
You live in Northern Europe. It gets (and stays) pretty cold there. Like jshull said, if it's not IN the oil, just around the filler cap, it's condensation. Very, very common it colder climates where the bike doesn't heat up enough to evaporate the water that is a natural by-product an internal combustion engine.
Looks to me like it's on the dipstick as well. But I'm not there. Any doubts, any doubts at all -- Change the oil and the filter and run it until it's fully warmed up, and I mean fully warmed up, the longer the better and recheck it.
If your crankcase somehow got contaminated, it may show up again. If it does -- Repeat process. Not sure how that much water could get it into your crankcase. Maybe not. But I don't like the looks of it. What I've seen before looks almost like vaseline around the filler cap area. Yours?
Pretty common for bikes that are run for short trips, especially when it's cooler out.
It looks like water got in there somehow. It may just be condensation, but it's probably a good idea to clean it and change the oil first anyway. Another possibility is if you added something like Lucas oil stabilizer. http://www.bobistheoilguy.com/images/lucas/lucas.htm
Don't worry about it. All bikes produce at least some of this. Its an emulsified mix of oil, water and blowby gases. My brother's Guzzi leaks about 1/4 pint of the stuff from the crankcase breather on a long trip.
Not sure how that much water could get it into your crankcase. Maybe not. But I don't like the looks of it.
It doesn't take much moisture at all to produce that. It was real common in older Fords for some reason. If the oil is milky change it, if not I'd run it. You could also change it for piece of mind.
Since the color of the oil look good and the foam is only in the upper part and not on the dipstick, I know now I do not have to worry.
Next weekend I'll be riding >1000km into Germany again. I'll recheck the dipstick after a few hours of riding when the bike is real hot. Gonna change the oil & filter after this trip anyway.
Y'alll ride safe!
Last edited by FXD2003Rider; Dec 29, 2017 at 01:59 PM.
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oil soup?
Frothy mocca brownish colored substance on dipstick
