Oil and Maintenance Guide for 2006 Kawasaki 400 Sport 400
Before You Service the Engine
Before servicing the 2006 Kawasaki 400 Sport 400, confirm the lubricant requirements and prepare to verify the final fluid level. Use the proper level-check method for this machine, and verify product suitability instead of relying on a catalog name alone.
What type of oil does a 2006 Kawasaki 400 Sport 400 take?
The engine-oil viscosity shown for this model is 10W-40. The available oil-product listings include 10W-40 Synthetic ATV/UTV Engine Oil, Formula 4-Stroke Power Sports Synthetic Motor Oil. For a service, choose oil that meets the engine’s actual application requirements, not just a product name.
Why does four-stroke engine oil need the right application rating?
Engine oils differ in additive packages and friction characteristics. Some powersports engines share oil with a wet clutch or transmission, so matching the manufacturer’s oil requirements matters in addition to viscosity. This listing does not by itself confirm the clutch design.

