Older Porsche 911s take about 11 quarts.
Specifically, oil cooled Porsches take that much, because they have to fill the oil cooler at the front and the lines that lead to the engine at the back.
alt Hacker News
Specifically, oil cooled Porsches take that much, because they have to fill the oil cooler at the front and the lines that lead to the engine at the back.