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A 1979 Porsche 911 SC has an oil capacity of 8 quarts if completely drained. This is about 7.57 liters.
A 2001 Porsche 911 2 Carrera requires 9 quarts/8.5 liters of oil without a oil filter change. Including an oil filter change it will require 9.3 quarts/8.7 liters.
The 3.2 engine used in year 1984-1989 uses 10.4 Quarts of oil.
911 3.2 1988
$300.00
The engine oil capacity for a 1997 Porsche Boxster is 9.5quarts.
about eleven quarts. Best to start with ten, then get engine to operating temp, and check level at idle and adjust.
Porsche recommends using Mobile 1 oil, specifically 0W-40.
The 2003 911 C4S takes about 9L of Ow40.
Mobil 1
Porsche recommends Mobil 1 Synthetic 0w-40.
Take it to a certified Porsche dealer and let the experts service your precision crafted engine.