AUTHORIZED
Our Subaru WRX STi EJ25/EJ20 Oil Change Kit with Motul 8100 X-cess Gen2 5W-40 110905 is a complete oil service kit designed for EJ powered Subaru WRX and STi models. It is a simple, driveway-ready refresh that pairs Subaru Genuine parts with a European-approved synthetic to protect the EJ under hard street use and weekend track days. In plain terms: drain the oil, replace the crush washer and filter, fill it up with oil—and your EJ is ready for another 3,000-3,500 miles.
Quick Answer: This kit fits EJ25 Subaru STi (2004–2021), EJ25 WRX (2008–2014), and the EJ20 WRX (2002-2005). It includes a Subaru 6‑star oil filter (PN 15208AA100), one Subaru crush washer MPN: 11126AA000, and a 5‑liter jug of Motul 8100 X‑cess Gen2 5W‑40. Not for 2015+ WRX (FA20) or 2022+ WRX (FA24).
We selected Motul 8100 X-cess Gen2 5W‑40 because its A3/B4 and API SP profile delivers the high‑temperature film strength EJ turbo bearings demand, while its OEM approvals (e.g., Porsche A40, BMW LL‑01, MB 229.5, VW 502.00/505.00) align with the EJ’s shear and deposit control needs. The Subaru Genuine 6‑star filter maintains the OE bypass and anti‑drainback characteristics the EJ25 expects, and the single‑use crush washer restores sealing integrity at the drain plug every oil change.
Ideal for owners who want one correct box for an EJ oil service with no guesswork; not intended for FA‑series engines or non‑Subaru applications.
One Subaru Genuine 6‑star oil filter (MPN: 15208AA100), one Subaru drain‑plug crush washer (MPN:11126AA000), and one 5‑liter jug of Motul 8100 X‑cess Gen2 5W‑40 (MPN:110905).
No. This kit is EJ‑only. The 2015–2021 WRX is FA20DIT, and the 2022+ WRX is FA24DIT—both outside this kit’s scope for filter and viscosity assumptions.
On EJ turbo engines that see spirited driving, a 5W‑40 with A3/B4 & API SP offers higher high‑temperature shear stability for sustained load and elevated oil temps, supporting bearing protection and deposit control without sacrificing cold‑start pumpability.
Subaru Genuine 6‑star EJ filter PN 15208AA100.
They are the same crush washer but the updated part number is 11126AA000. The older Subaru part number is 803916010.
Plan a basic hand‑tool service: drain pan, gloves, funnel, 14 mm (typical) drain‑plug socket, and an oil‑filter cap/wrench sized to the EJ filter. Safely raise/support the car, remove the undertray fasteners (WRX/STi vary), and warm the engine first for faster drain‑down. Break the filter loose, verify the old gasket isn’t stuck to the block, lightly oil the new gasket, and hand‑tighten. Always replace the crush washer before torquing the plug. Refill, idle to build pressure, check for leaks, then recheck level after a short drive. Dispose of used oil responsibly.
Follow the interval in your Subaru maintenance booklet for your usage pattern. Severe service (short trips, track/autocross, extreme ambient heat) justifies shorter intervals; always monitor oil level between services on EJ engines.
Yes—quality synthetics are miscible—but for best results perform a full drain and filter swap. If you’re changing brands, a shorter first interval can help normalize any additive‑package differences.
This maintenance kit does not alter emissions control systems and carries no CARB or EPA compliance impact.
Subaru Genuine components (filter, washer) carry the Subaru parts warranty when purchased through authorized channels. Motul lubricants are covered against manufacturing defects per Motul policy. This kit does not include labor coverage. Keep your receipt with vehicle records.
SKU:MOTUL-XCESS-EJ25-5W40
