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Scott Gardner

Job title

Technical Director, Bahnsport

Porsche experience

15 years

Dear Sir,

My 991.1 Carrera S Cabriolet is seven years old and has not had a PDK gearbox oil change, on my previous 997.2 I seem to remember these being due every six years or 60k miles? Is my car overdue or has it been missed? Daniel Klarmy

Yes you are correct, on the 997.2 the service schedule for the PDK gearbox clutch fluid change is every six years or 60,000 miles, whichever comes sooner. Regarding the PDK transmission fluid, this is due every 12 years or 120,000 miles. On the 991 variation the service schedule was extended and no longer due every six years/60,000 miles. The fluids (both clutch oil and transmission oil) will be due at 12 years/120,000 miles so your 911 is not overdue and hasn’t been missed. It’s important to stick to these schedules as gearbox repairs can be expensive. There is a filling/bleed procedure to follow on the diagnostic tester to ensure the fluid levels are correct at the relevant oil temperatures, as the PDK gearboxes can be sensitive to the levels being incorrect.