Porsche Boxster, 981 (USA)

Manual transmission fluid capacity & service interval

Porsche Boxster, 981 (USA) manual transmission fluid capacity ranges from 3 to 3,3 liters. Service intervals occur at 144 months or 120000 miles. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Boxster GTS (2015-2016)
  • Use: Normal
  • Capacity 3,2 liter
  • Change 144 months/ 120000 miles
  • Code: G81.20 6/1
Boxster Spyder (2015-2016)
  • Use: Normal
  • Capacity 3,2-3,3 liter
  • Change 144 months/ 120000 miles
  • Code: G81.20 6/1
Boxster (2012-2016)
  • Use: Normal
  • Capacity 3 liter
  • Change 144 months/ 120000 miles
  • Code: G81.00 6/1
Boxster S (2012-2016)
  • Use: Normal
  • Capacity 3,2 liter
  • Change 144 months/ 120000 miles
  • Code: G81.20 6/1

Additional Notes

  • The Porsche Boxster 981 manual transaxle fluid capacity differs by trim level, with the base Boxster requiring 3 liters while the Boxster S and Boxster GTS each require 3.2 liters.
  • The Boxster Spyder (2015-2016) carries a capacity range of 3.2 to 3.3 liters for the manual transaxle, making it the only trim in the 981 lineup where a variable fill volume is specified rather than a fixed value.
  • A capacity range rather than a single fixed figure typically reflects minor variation in fill level depending on assembly tolerances or drain completeness during a service procedure.
  • All four trim configurations share an identical service interval under normal use conditions: 144 months or 120,000 miles, whichever comes first.
  • A 144-month interval translates to 12 years, which is a notably long fluid change cycle and reflects the sealed transaxle design common to modern Porsche manual gearboxes.
  • The GTS and Spyder variants, both introduced for 2015-2016, align with the same 144-month/120,000-mile interval already established for the base Boxster and Boxster S across the full 2012-2016 span.
  • All specifications listed apply exclusively to normal use conditions, meaning the intervals and capacities recorded here are not associated with a severe-use service schedule.
  • The transaxle note applies uniformly across all rows, confirming that the fluid system referenced is the rear-mounted manual transaxle unit rather than a separate gearbox or differential assembly.

Other Systems