I just did the 5,000 mile service on my 05 Deuce changing my oil and filter. Went over to 20/50 Mobil 1 V-Twin Synthetic oil from regular HD 20/50 oil. Service manual says 3.5 quarts to fill. I put in 3 quarts and took it for a 20 minute cruise and came home, put it on the jiffy stand and let it idle for 2 minutes then shut off. Just like the manual says to do. Took oil reading and it shows "over full" mark on my dipstick.....My oil level is just about at the welding area on the oil neck too.

I know I let it ALL the oil drain out. Kept the oil plug out for about 30 minutes. Anyone have thoughts on this?

FYI- I also changed the tranny oil to 75/90 Mobil 1 and primary oil with Mobil 1 20/50 V-Twin

 

There was probably some oil left in the engine.I never have to add more than 3 quarts after I drain it.

 

There is always some oil left in the engine sump. Could be as much as 28 ounces. There is a way to get it out. Check the web site below:

http://www.roguechopper.com

 

I did the same thing on our `05 Standard.3 quarts is too much.I add 2.5 quarts,and top off from there.

 

Thanks for the info! I did re-read my manual and it says to ad "no more" than 3.5 quarts. I guess that means 2.5 to 3 is more like it