Western Star oil capacity, filters & fluid specs

3 models · 1999-2026 · 125 truck & engine combos

Western Star 4900 (1999-2020)

Engines: Caterpillar C15 / 3406E (15.2L), Cummins ISX / ISX15 (15.0L), Cummins N14 (14.0L), Cummins X15 (15.0L), Detroit DD15 (14.8L), Detroit DD16 (15.6L), Detroit Series 60 (12.7L / 14.0L).

Western Star 49X / 57X / 47X (2021-2026)

Engines: Cummins X15 (15.0L), Detroit DD13 (12.8L), Detroit DD15 (14.8L), Detroit DD16 (15.6L).

Western Star 5700XE (2014-2022)

Engines: Cummins ISX / ISX15 (15.0L), Cummins X15 (15.0L), Detroit DD13 (12.8L), Detroit DD15 (14.8L).