It varied over time and evolution of the engine but if you buy 10 quarts you should have enough with new oil filter installed.
Just buy a 12 quart box.
Check your owners manual for the exact amount of your model year.
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"It broke because it wants to be Upgraded  "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
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