Subaru WRX STI oil specs by year
The Subaru WRX STI (2015–2021) uses 4.5 qt of 5W-30 oil across all 7 model years covered here. Select a year below for the full record with filter part numbers and source notes.
| Year | Capacity | Oil type | Filter | Page |
|---|---|---|---|---|
| 2021 | 4.5 qt | 5W-30 | PRO-TEC PXL57712; Purolator L14615; AMSOIL EA15K12 Verified fit | Open record → |
| 2020 | 4.5 qt | 5W-30 | AMSOIL EA15K12; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2019 | 4.5 qt | 5W-30 | CHAMP / LUBER-FINER PH2876; AMSOIL EA15K12; AMSOIL EA15K01 Verified fit | Open record → |
| 2018 | 4.5 qt | 5W-30 | AMSOIL EA15K12; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2017 | 4.5 qt | 5W-30 | AMSOIL EA15K12; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2016 | 4.5 qt | 5W-30 | AMSOIL EA15K12; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2015 | 4.5 qt | 5W-30 | AMSOIL EA15K12; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
Subaru WRX STI oil spec changes by year
Oil specs remained consistent across the 2015–2021 model years covered here. The primary engine uses 4.5 qt of 5W-30 throughout this range. Always open the exact year page and confirm the source notes before buying.
Capacity
4.5 qt
Same across all 7 listed years
Oil type
5W-30
Same across all 7 listed years
Filter brands
PRO-TEC, Purolator, AMSOIL, K&N
In checked records — open year page for part numbers
Subaru WRX STI oil — frequently asked questions
- What oil does the Subaru WRX STI take?
- The Subaru WRX STI takes 4.5 qt of 5W-30 oil across the 2015–2021 model years covered here. Always open the exact year page and confirm in your owner's manual before buying.
- Is the oil capacity the same for all Subaru WRX STI years?
- Yes. All 7 Subaru WRX STI model years covered here use 4.5 qt as the primary engine capacity. Confirm in your owner's manual before buying.
- What oil filter fits the Subaru WRX STI?
- The most recent checked year lists PRO-TEC PXL57712; Purolator L14615; AMSOIL EA15K12 as a compatible oil filter for the Subaru WRX STI. Filter part numbers can change across model years — open the exact year page for the source-checked part number for your year.
Look up a specific Subaru WRX STI year
Select a model year to open the exact checked oil fitment record before ordering.