Oil and Maintenance Guide for 2003 Kawasaki STX DI - JT1100-G 1100.0
Before You Service the Engine
The 2003 Kawasaki STX DI - JT1100-G 1100.0 uses a two-stroke oil application; verify the required product and oil-delivery system before adding lubricant. Follow the correct model-specific instructions; two-stroke engine oil is not interchangeable with ordinary four-stroke crankcase oil.
What type of oil does a 2003 Kawasaki STX DI - JT1100-G 1100.0 take?
The available oil-product listings include HP Marine Synthetic 2-Stroke Oil, Synthetic 2-Stroke Injector Oil. For a service, choose oil that meets the engine’s actual application requirements, not just a product name.
Does a two-stroke PWC always require fuel premixing?
No. Two-stroke personal watercraft may use premixed fuel or separate oil injection. The product listing does not establish this craft’s oil-delivery design or a safe mixing ratio; consult the correct service manual.

