Engine oil and oil filter
Capacity, filter, intervals – and why we do not yet recommend an oil grade.
In short: About 5.5 litres go in up to the upper mark; the matching filter is in the table. There is no reliable information on oil grade or viscosity – so we give none.
Capacity and filter
Fill at least to the upper mark because some oil goes into the new filter. The new filter’s seal is wetted with fresh oil and the filter is tightened by hand. Filter and drain plug sealing ring are in the table – as unverified information.
Intervals
The general Porsche recommendation (Turbo shorter than naturally aspirated) is explicitly not 944-specific. Practical advice is to change oil every 3,000 miles and not to exceed 5,000 miles. The maintenance schedule is authoritative.
Turbo
The Turbo has an external oil cooler. Owners report higher oil consumption under hard use; no definitive cause is documented.
Oil grade
The correct oil specification is in the owner’s manual or workshop manual. We will add it once checked against a factory source.
Technical values
Only work with the workshop manual and the correct tools. Do not use unverified values without checking them – wrong tension values can destroy the engine.
| Value | Figure | Condition | Status | Source |
|---|---|---|---|---|
| Capacity to upper dipstick mark | about 5.5 litres | Not stated whether this includes the filter | unverified | [1] |
| Oil filter | Mahle OC 142 or Porsche 944 107 201 90 | – | unverified | [1] |
| Drain plug: spanner size / sealing ring | 17 mm / 26 × 32 mm | – | unverified | [1] |
| Oil grade and viscosity | — pending | See owner's manual or workshop manual | pending | [] |
Sources
- Secondary source Oil and Filter Replacement
Oil change, capacity, filter.
- Secondary source 944 Turbo (951) FAQ
Secondary source on the Turbo: charger, boost, wastegate, model years. Some figures quoted from the workshop manual, unverified here.