I have a 2003 flstsi.  The other day i left my bike outside after washing and cleaning it up.  I went to the autoparts and returned very shortly.  After returning and finishing my cleanup I decided to check the oil in my bike.  Low and behold, water.  walking around in a daze for a few minutes and talking to everyone in my beighborhood (no one saw anyone at my house) it appears that some one came along and ppoured about a bottle of water in my oil while i was gone!  There was none in the gas tank. (i drained it to check)  Does anyone have any ideas what else i need to look at before i crank it.  I changed the oil and filter.   Have only 2543 miles on the bike and have always used Harley  synthetic.  Any thing anyone can add to help me check will be helpful!:newsmile011::
		
		
	 
Not saying this can't / hasn't happened to you , but, let's evaluate this....
1st - who do you know that would hold a grudge enough to do this?
2nd - who do you know that knows your bike enough to find the oil plug to do this?
3rd - how long did it take you to go to the A.P. store and back?
4th - who do you know that could do this in the time it took you to go & get back??
Did you do the last oil change prior to this yourself?
This bike is a 03 with only 2543 miles on it? What oil change intervals has been preformed on it? Did you use any high pressure wash on it? 
 What I would do - drain the oil,take the filter off and drain it,put that filter back on,fill it with a less expensive oil. Run it long enough to warm the oil,drain it and put a HD filter on it and fill it with a good syn. oil such as Mobil or Spectro and stay away from the Hugo HD oil (jmo). 
And if you do have that kind of jerks living close to ya --- - lock-up &  bolt it down bro !!!