I've done that...I now measure what comes out and put that amount back in. Previously, I put 3400 in and dipstik measured a bit over full. I didn't think much of it and got oil out the left side. Took 200 out and all good...measures perfectly on the dipstick. Drained it hot for 20 mins upright and still over filled it... If your dipstick is good now, then just measure what comes out and put the same back in and it sould be smack on (after you run it for a min or so...to fill your filter of course).Im coming up to the 12000km service and Im going to do it myself.
Ill measure the oil in 3400ml that way I should be somewhere near the mark.