Kawasaki Ninja 400 Oil Change: Capacity, Torque, Filter
Updated August 2026The Ninja 400's real oil numbers from the owner's manual — 2.0 L with a filter, 30 N·m on the drain plug, the HF303 cross, and the long factory interval explained.
The numbers that matter
Source: the Ninja 400 owner's manual (2018–2023 EX400).
| Spec | Value |
|---|---|
| Oil capacity, filter change | 2.0 L |
| Oil capacity, drain only | 1.6 L |
| Oil capacity, dry engine | 2.3 L |
| Viscosity | 10W-40 |
| Oil standard | API SG–SM with JASO MA, MA1 or MA2 |
| OEM filter | 16097-0008 family |
| Aftermarket cross | HiFlofiltro HF303 |
| Drain plug torque | 30 N·m (3.1 kgf·m / 22 ft·lb) |
| Service interval | 7,600 mi / 12 months |
Three capacities, one correct fill
Kawasaki publishes three figures because they describe three jobs. A routine drain takes 1.6 L back. Change the filter too and it is 2.0 L. The 2.3 L dry figure only applies to a rebuilt or fully flushed engine — using it on a normal change overfills the crankcase, and the excess ends up in the airbox through the crankcase breather. Fill 2.0 L with the new filter on, warm the engine for a minute, then confirm on the sight glass with the bike upright.
The 30 N·m drain plug
This is one of the few small-displacement sport bikes where the factory drain-plug torque is genuinely published and reasonable: 30 N·m with a new aluminum crush washer. The sump is aluminum; the bolt is steel. Every ugga-dugga past spec is thread life you will want back at 30,000 miles. If you use one torque number from this page, use this one.
Filter and oil choice
The OEM cartridge crosses to the HiFlofiltro HF303 per the HiFlo catalogue — a filter shared across Kawasaki, Honda, Yamaha and Polaris applications, so supply is deep and prices honest. For oil, the manual asks for 10W-40 meeting API SG or better with any JASO MA grade. That describes practically every motorcycle-specific 10W-40 on the shelf, from budget semi-synthetic to full ester racing oil; the parallel twin is not oil-fussy, and the clutch only cares about the JASO letters.
About that 7,600-mile interval
Kawasaki's book interval is long compared to the 4,000-mile habit most riders inherited. For commuting duty the book is fine — the engine runs cool and the oil volume is generous for the displacement. Track days, sustained high rpm, or lots of short cold-start trips justify halving it. Oil is the cheapest component in this engine; the second cheapest is the filter.
Model-year note: these figures are for the 2018–2023 EX400 generation. The parallel-twin Ninja 500 that follows it carries different numbers. Two minutes with your own manual beats any spec sheet on the internet, including this one.
Questions riders ask
How much oil does a Ninja 400 take with a filter change?
2.0 liters with a new filter; 1.6 liters for a drain-only change. The 2.3 L figure in the manual is for a completely dry engine and will overfill a routine change. Source: Ninja 400 owner's manual.
What is the Ninja 400 drain plug torque?
30 N·m (3.1 kgf·m / 22 ft·lb), with a fresh crush washer each change, per the owner's manual.
What oil filter fits the Ninja 400?
The OEM 16097-0008-family cartridge, or the HiFlofiltro HF303 cross per the HiFlo catalogue. The HF303 is one of the most widely stocked filters in powersports.