Originally Posted by *********
I always put 7 full bottles into my engine when I do an oil change. Never measured how much came out but I usually put in 6 bottles. Then turn the car on and wait for the reading to come up, then top off as needed. Though I always empty the 7th bottle into my engine.
I do let the car sit for a half hour draining though.
Right. Warm oil and a long drain period will obviously get more oil out. Don't forget that overfilling is bad and can damage your cats.