Porsche Cayman Owner's Manual page 303

Capacities
Use only fluids and fuels authorized by Porsche. Your authorized Porsche dealer will gladly advise you.
Your Porsche has been designed so that it is not necessary to mix any additives with oils or fuels.
Engine
Coolant
Manual transmission and differential
Tiptronic S
Differential with Tiptronic S
Power steering
Brake uid
Windshield washer
Fuel tank
Fuel quality
Oil change quantity without oil filter approx. 1.98 U.S.gallons/7.5 liters
Oil change quantity with oil filter approx. 2.05 U.S.gallons/7.75 liters
Please observe the chapter "ENGINE OIL RECOMMENDATION" on page 210.
Cayman: Manual transmission approx. 5.81 U.S.gallons/22 liters; Tiptronic S: approx. 5.92 U.S.gal-
lons/22.4 liters
Cayman S: Manual transmission approx. 5.89 U.S.gallons/22.3 liters; Tiptronic S: approx. 6.42 U.S.gal-
lons/24.3 liters
5-speed: approx. 2.4 quarts/2.25 liters; 6-speed: approx. 3 quarts/2.8 liters
approx. 2.5 U.S.gallons/9.5 liters
approx. 0.21 U.S.gallons/0.8 liters
approx. 1.1 quarts/1 liter hydraulic fluid Pentosin CHF 11 S
approx. 0.4 quarts/0.39 liters; use only Original Porsche brake fluid
approx. 0.66 U.S.gallons/2.5 liters without headlight washer
approx. 1.58 U.S.gallons/6 liters with headlight washer
Refill volume approx. 16.9 U.S.gallons/64 liters, including approx. 2.6 U.S.gallons/10 liters reserve.
Your engine is designed to provide optimum performance and fuel economy using unleaded premium
fuel with an octane rating of 98 RON (93 CLC or AKI).
Porsche therefore recommends the use of these fuels in your vehicle.
Porsche also recognizes that these fuels may not always be available. Be assured that your vehicle will
operate properly on unleaded premium fuels with octane numbers of at least 95 RON (90 CLC or AKI),
since the engine's "Electronic Octane™ knock control" will adapt the ignition timing, if necessary.
® ®
or Pentosin CHF 202
Vehicle Identification, Technical Data
301