Porsche Boxster/Cayman

981

9A1 flat-six · 2.7 L / 3.4 L NA (2012–2016)

Oil Specification

Grade

Mobil 1 0W-40

Capacity

8.75 L (with filter)

Porsche Spec

Porsche A40

Service Schedule

Engine oil & filter

1 year / 12,000 miles

Brake fluid flush

2 years (regardless of mileage)

Auxiliary drive belt

8 years / 80,000 miles

Pollen filter

2 years

Air filter

4 years / 40,000 miles

Spark plugs

4 years / 40,000 miles

Coolant flush

4 years, then every 2 years

PDK fluid

4 years / 40,000 miles

Safety-critical / commonly missed

Known Issues & Watch Points

Bore scoring (9A1 — significant risk)

Critical

The 981 shares the 9A1 engine with the 991.1. Bore scoring is well-documented and can affect any 981. Pre-purchase bore scope inspection is essential. Higher risk on cars used on track or regularly taken to high RPM.

Oil consumption monitoring

Important

Check oil level at every fuel stop. A consumption rate above 0.5 L per 1,000 miles warrants investigation. Early detection of bore scoring can mean the difference between a refresh and a full engine replacement.

Intervals are general guidance. Always refer to your car's Maintenance Booklet and consult a qualified Porsche specialist. Known issues are documented based on commonly reported patterns — not every car will be affected.

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