No problem, ride safe.

Lenny, no disrespect. I was trying to discern a part number or narrow the search down to a vintage or year.

As a former wrench from the stone age I understand that some parts have nicknames. However, at the end of the day you have to find a part number, not as easy as it might sound. Use the word "multi-fit" and the parts guy knows he's in for a long afternoon.

Truth be told, the 'new' stuff confuses me. I use explosion diagrams just to find out where the modern stuff bolts to.

No disrespect taken. Here is an exploded view please see No. 28 This is where the umbrella valve goes in the rockerbox. While the buells stopped using them in 2003 and went to PCV (positive crankcase ventalation) valves I do believe that the harley sportsters still use the old style umbrella valves to this day. In any event the blow by also known as spooge is the oil mixed with water condensation from the inside of the engine and is routed to the intake or carb to be burned. Thus the oil in the aircleaner. Some people use a spooge can or just route it under the bike and let it drip out onto the road. Hope this makes more sense. These illustrations come from a 1999 to 2002 Buell parts book so the part numbers may not be the same as the Harley ones.

Lenny, that was a great reply! Having seen it, perhaps we should do this sort of thing more often. Lots of guys want to work on their bikes and cars, however, doing the diagnostics and learning what parts come into play is often the most confusing issue.

For example, the A/C stopped working in my 1989 Mustang. Another guy who knew more about the system told me to yank out a bizarre little part which looked to me like two wires affixed to a poppet valve. For 28 bucks and a tutorial from this guy I got the system up and running.

The main cause of the problem? It wasn't the car, it was that I had never worked on an A/C unit before.

That makes sense to me. It might be the condensation building up alot of "spooge". It's always damp here in SF. If the Umbrella valve is not working right, it would let it leak when the bike isn't running and there is no air flow to draw it into the carb to be burned. It just soaks into the air filter instead.
Thanks

Always happy to help.

This is normal on the older Sporties (2006 and older)

Is a little annoying but nothing to worry about. When you go on the long hauls, single day riding, hot temps, 600+ miles a day, you'll get oil burping from the A/C. The 2006 and older Ultra Classics do it too. When you see it starting to drip from the A/C cover, pull the cover and clean the filter. Keep an eye on your oil tank level.

The older Ultra's do it as well? Then I bet all the 88A's do the same thing. I wonder if that is why my oil level has dropped about 1/2 quart over 2000 miles?

How many miles on your bike? Got any leaks? Seems a little much but maybe not...

I have put about 5000 miles on the bike and it has a total of 18000 miles. If it's leaking it ain't hitting the pavement.