Checked oil specs by engine
2018 Porsche Cayman oil capacity, type & filter
The 2018 Porsche Cayman oil capacity is 6 qt (2.0L 4-Cyl Turbo) and 6 qt (2.5L 4-Cyl Turbo). All engines use 0W-40 oil.
| Engine | Capacity | Oil Type | Filter |
|---|---|---|---|
| 2.0L 4-Cyl Turbo | 6 qt | 0W-40 | Purolator PL21446 |
| 2.5L 4-Cyl Turbo | 6 qt | 0W-40 | Purolator PL21446 |
Match one of 2 checked engine options before buying oil or a filter. Also check 2018 Porsche Cayman GTS, 2018 Porsche Cayman S .
Confirm Purolator PL21446 in the retailer selector before checkout.
Confirm Purolator PL21446 in the retailer selector before checkout.
Search paths only — confirm your OEM viscosity spec and quantity before checkout.
2018 Porsche Cayman oil specs: capacity conditions and filter notes
Check the door jamb sticker, owner's manual, or displacement badge on the engine cover. Match it to the engine options listed above before buying oil or a filter.
Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.
Source coverage for the 2018 Porsche Cayman
Supported by Pennzoil OATS.
Supported by Pennzoil OATS and AMSOIL Lookup.
Supported by Purolator Part Finder.
3 checked source rows for the 2018 Porsche Cayman.
Before ordering for this 2018 Porsche Cayman
Porsche Cayman oil specs by year
This table includes checked Porsche Cayman model years available in our database.
| Year | Capacity | Oil type | Filter |
|---|---|---|---|
| 2019 | 6 qt (multiple engines) | Unverified | Purolator PL21446 |
| 2018 Current page | 6 qt (multiple engines) | 0W-40 | Purolator PL21446 |
| 2017 | 6 qt (multiple engines) | 0W-40 | Purolator PL21446 |
| 2016 | 7.9 qt (multiple engines) | 0W-40 | PG99090EX |
| 2015 | 7.9 qt (multiple engines) | 0W-40 | PG99090EX |
| 2014 | 7.9 qt (multiple engines) | 0W-40 | PG99090EX |
| 2012 | 7.9 qt (multiple engines) | 0W-40 | PG99090EX |
| 2011 | 7.9 qt (multiple engines) | 0W-40 | PG99090EX |
| 2010 | 7.9 qt (multiple engines) | 0W-40 | PG99090EX |
| 2009 | 7.9 qt (multiple engines) | 0W-40 | ECOGARD X5316 |
| 2008 | 8.1 qt (multiple engines) | 0W-40 | ECOGARD X5316 |
| 2007 | 8.2 qt (multiple engines) | 0W-40 | Purolator L25316 |
| 2006 | 8.2 qt | 0W-40 | ECOGARD X5316 |
How we verified 2018 Porsche Cayman oil data
How we verify fitmentChecked fitment data. Last checked: 2026-06-27.
This page checked 3 sources for the 2018 Porsche Cayman. The table lists which checked source contributed capacity, oil type, or filter evidence.
We checked leading oil brands and aftermarket filter catalogs so you don't have to.
- Confidence
- Cross-check pending
- Sources checked
- 3
- Last checked
- 2026-06-27
- Capacity: Pennzoil OATS
- Oil type: Pennzoil OATS and AMSOIL Lookup
- Filter: Purolator Part Finder
| Source | Supports | Checked | Link |
|---|---|---|---|
| AMSOIL Lookup | Oil type | 2026-06-27 | Visit brand site |
| Pennzoil OATS | Capacity, Oil type | 2026-06-27 | Visit brand site |
| Purolator Part Finder | Filter | 2026-06-27 | Visit brand site |
2018 Porsche Cayman oil FAQ
Which engine configuration applies to my vehicle?
Use the door jamb sticker, owner's manual, or engine cover badge to identify your engine, then match it to the engine options listed above.
Is the oil capacity measured with or without the filter?
Capacity condition matters. With filter includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.
Why should I confirm before buying?
Retailer catalogs can update separately. Confirm the exact 2018 Porsche Cayman selector at checkout before you buy.
Do I also need to match the OEM oil approval?
Yes. Viscosity is only one part of the oil spec. Match the oil approval listed in your owner's manual or on the bottle before checkout.
How often should I change the oil on a 2018 Porsche Cayman?
Use the oil-life monitor or the interval in your owner's manual for this engine. Severe service can require a shorter interval.
Do I need a new drain plug gasket?
Replace it when your vehicle uses a serviceable gasket or crush washer. Confirm the gasket size and drain plug torque from the service manual or parts counter.
2018 Porsche Cayman maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter 2018 Porsche Cayman cabin filter part numbers
- Engine air filter 2018 Porsche Cayman engine filter part numbers
- Oil type & capacity 0W-40 · 6 qt Checked
Where to buy
These are retailer search paths for your vehicle. The specs above are checked — use the retailer's vehicle selector at checkout to confirm before ordering.
This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.
Walmart
Compare oil and filter listings for the 2018 Porsche Cayman. Confirm capacity, viscosity, and filter part number before checkout.
Search 2018 Porsche Cayman oil & filter →AutoZone
Use AutoZone's vehicle selector for the 2018 Porsche Cayman before checkout to confirm oil capacity, viscosity, and filter fitment.
Search 2018 Porsche Cayman oil & filter →Amazon
Search Amazon listings for the 2018 Porsche Cayman and check listing fitment notes against the specs above.
Search 2018 Porsche Cayman oil & filter →O'Reilly
Open O'Reilly's fitment search for the 2018 Porsche Cayman and verify oil capacity, viscosity, and filter part number before ordering.
Search 2018 Porsche Cayman oil & filter →Look up another vehicle
Find checked oil capacity, type, and filter data by exact year, make, and model.