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Note: Part numbers sometimes change without notice. Always double check with your supplier that you have the latest part numbers. Parts you will need: 1 ea 996 107 225 60 (for 3.6 liter engines) or 996 107 225 53 or 996 107 225 52 (for 3.4 liter engines) Oil Filter (with O-ring) 1 ea 900 123 106 30 Aluminum Sealing Ring 9 ea 996 106 665 55 Mobil 1 0W-40 or equal Approved Oils as of April 2007 The list is now very long (for worldwide coverage). Here is a short list of popular oils (US/Canada): Castrol Syntec 5W-40 5W-40L Mobil 1 0W-40 (factory fill) Mobil 1 5W-40 Mobil 1 5W-50 ChevronTexaco Havoline Ultra 5W-40 Tools you will need: Tire ramps or jack 8 mm allen wrench or allen hex socket Oil filter wrench (p/n 000 721 920 40) (tool 9204 about $7 to $22 at your dealer) 27 mm socket (or a wrench big enough to fit the oil filter wrench) 9 quart oil catch pan Torque wrench (optional) Locations shown on Carrera - Boxster will be turned 180 degrees. Oil should be changed when the engine has reached normal operating temperature. CAUTION - oil will be hot, take adequate precautions to avoid being burned. Use ramps or jack up the vehicle at the points provided. Remove the oil drain screw and collect the engine oil in a disposal container (at least 9 quarts). Always dispose of the waste oil in accordance with local legal requirements. Wait about 20 minutes for all the old oil to drain. Then clean the oil drain screw and screw it back in with a new aluminum sealing ring. Tightening torque is 37 ft-lb. Remove the oil filter housing with the oil filter wrench and unscrew the housing. Remove oil filter housing vertically downward. Drain remaining oil into a disposal container. Remove the filter element. Remove the filter downwards, drain and dispose of it in accordance with local legal requirements. Note: If the spindle/spring assembly sticks to the filter - remove it and push it back into the filter housing.<br /> Clean the oil filter housing 1 thoroughly inside and outside and replace the O-ring 3. The O-ring should not be levered off or on with a sharp object (e.g. screwdriver). A sharp object will damage the O-ring. Install the new filter element. Lightly apply oil to the O-ring and housing threads. Install oil filter housing and tighten to 19 ft-lb. Fill with engine oil after a draining time of approx. 20 minutes. Model/Capacity in Liters (US quarts) (approx.) 911 Carrera (3.4 liter engine) 8.50 liters (8.98 US quarts) 911 Carrera (3.6 liter engine) 8.25 liters (8.71 US quarts) Boxster 8.50 liters (8.98 US quarts) Note: Based on RFM's excellent recommendation we are suggesting that folks that do their own oil changes upgrade their oil drain plug to a stainless steel version of the drain plug. The original version is aluminum and strips very easily so this stainless steel version should eliminate that from happening. 900.219.015.00 SS Drain Plug -- US MSRP $21.40 -- Sunset Imports price $12.80