How many quarts of oil does a 2001 Porsche 911 turbo hold?

The best way is to drain the old oil and then measure out how much you have drained. There are 3 drain points, one at the sump and then two others but sometimes the bolts are just too hard to undo so let them be.

I have a 2002 996 turbo and I use around 7.5 European Litres. Also take into account the oil in the filter when draining the filter. You can go to 8 Litres.

A litre is 1 and three quarters of a UK pints. A UK pint is 20 fluid ounces and USA it is 16 fluid ounces so you'll have to use a decent online conversion guide. So 35 Fluid ounces is a European Litre so times that by 7.5 or 8 and you have your answer in fluid ounces.

I hope this is of help, I have just changed the oil on mine so this is a timely question for me to answer. I use Mobil 5W 40 and not the 0w 40 as it seems better in the higher powered engines such as the turbo.