• Engine: Engine Code. A sequence of letters and numbers. This includes the engine block type and engine family, but may also include other information.
  • Capacity: Capacity/Filter capacity in litres(liters). Engine oil fill quantity (Service fill).
  • Intervals: Oil Change Intervals (use: normal). Engine oil should be changed at the latest after this time or after miles/km, whichever comes first.

The oil filter must be replaced every time the oil is changed, unless the car’s owner’s manual recommends otherwise.

Model: Porsche 928 (1986 – 1995)

Porsche 928 Engine Capacity Intervals
928 GT (1989 – 1992) M28.47 7.5 20 000 km/ 12 months
928 GTS (1991 – 1995) 7.5 20 000 km/ 12 months
928 S4 (1986 – 1992) M28.42 7.5 20 000 km/ 12 months

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