dgdrx, I do this , drive the car to normal temp , then start to drain both front and rear sump bolts asap. I have a level garage floor ,,I raise the front with small 2.5 inch wooden ramps , then I use a jack to raise it a bit more to help drain the bottom of the sump. I let it drip for about an hour or until it only drips about once every 30 seconds.While it is dripping change your filter and prepare your new oil.
I think the Germans probably have the amounts based on a car level on a lift , but I like to try and get as much old oil out as possible ,,and I think it is far better to get more out than leave extra behind. I would not be comfortable with extraction method out the tube,,,,and this doesn't work on the M113 AMG with a separate front section anyway.
Given that there is a 2.0l difference between minimum and maximum , there is a good margin to run just under maximum,, which is better than over maximum.
Sorry I use litres ,,,,not quarts ,,, but talking quarts I would say as long as you do a good drain from both sump bolts , you can easily add 8.5 quarts without a problem,,,
the metal dipstick is difficult to insert ,,it seems to hit obstructions ,,so I don't use it , I use a length of clear plastic tubing , I know this could give me variation due to flexing ,,but I also use it to sample the oil and see how it looks.
Measure out your desired quantity of new oil into other containers ,,I use clean plastic milk bottles , so you are certain of the quantity.
After that go for a drive , come back ,park level , wait ten minutes , and do a basic oil level check with the MFD ,,,if it says engine oil level is ok ,,, be happy at that.
Last edited by Benzyle; 06-21-2019 at 03:40 PM.