Thank's everyone for your replies.
I realize that the small amount of residual oil is not that big a deal. Notwithstanding, I am just anal enough about my bike maintenance to get the Rogue Choppers scavenger system referred to by the Dr. (thanks Doc!). Thanks also NEWHD for your less expensive suggestion.
You guy's rock! :guitar
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I'm afraid of using the unit like it states. The Pipe PLUG they are having you take out Besides the drain plug IS USUALLY a No No..
Located directly Under the crank-case,,, AND If you break the casting, which DOES happen, Would mean the whole engine Has to come out... I'd stay clear of that purge system....
I could Suggest the way I have done it to get Old Oil Out..
when i change oil (not always) i drain the oil HOT , put plug back into the motor oil pan...add 3 quarts of oil to the bike.
THEN remove the old filter.
Remove spark Plugs and with a oil filter drip tray, catch the PUMPING old oil ,
hit the starter for 3 seconds,,,,
then watch what color of oil is coming out,,,
3 more seconds and it usually is clearing/cleared up..
Then i fill oil filter once to the visual inside top and allow to sit for a minute, soaking in.
Then put filter on and tighten..
Replace plugs, start and run for a minute. Shut off and check level to make sure that the oil IS CLOSE to and above add mark..
IF lower than 1/2 quart on the COLD level,,, I put about 1/4 quart oil in and take it out for a run. Then I check when back Heated,,, then fill Properly to the correct level and that is where I leave it. Under a little is better IMO than right up on the full mark..
My bike takes a LITTLE Less than 3.5 quarts to fill with oil & filter change...
4.0 quarts has just a wee bit left when finished FLUSHING out the engine and my bike is properly topped off... works for me.
signed....BUBBIE