I'm "old school" & perform an oil change by draining the oil from the pan. I also put my Crossfire up on a pair of low profile Rhino ramps. And as some have stated, I always pour in 8 quarts of synthetic oil (Mobil 1 or Castrol Euro Formula) & install a fleece filter (like so many others).

Years back, I made an attempt to install the 8 liters which was 8.45 quarts. PITA trying to add just under 1/2 quart after the 8. Probably because I use the ramps and the car isn't exactly level, there was enough oil left in the system that the HI OIL LEVEL ALARM kept coming on when I took the car to a ToD event in the Smokies (the alarm was most likely caused by the forces at play when driving the "twisties" on these roadways). Came back home & siphoned out about a 1/2 quart and no more warning light during "spirited" driving. Made me a firm believer & follower, like others, to only add 8 quarts during an oil change. I firmly believe that if one follows the procedure onehunder80 described in his post, and change the oil while the car is flat, adding the 8 liters during an oil change will work w/o turning on the HI OIL LEVEL ALARM. And he has verified that to us all.

Probably an optimum oil change quantity, for those of us locked into the US English system, would be to purchase a 5 liter bottle of the oil (probably an internet purchase at a higher cost than the local Walmart) & then add another 3 quarts . That would give you just over 8-1/4 quarts during an oil change. And then again, probably not worth the extra effort & cost. When I check the oil level stick after an oil change, it is always at or slightly above the FULL mark. Oh, and I change the oil in my Crossfire every 2 years, driving 2500-3500 miles during that time frame (most 2-yr periods, the overall mileage is much less). And I don't know if anyone shared this with you, I pour the new oil in using the oil filter housing, not the oil port in the valve cover. Much faster using this method. The oil filter goes in last. And I torque the filter cap to the 25 N-m stated on the cap. I are an educated & trained reliability engineer!