Oil and Maintenance Guide for 2009 Yamaha YFZ450R 450
Before You Service the Engine
When planning an engine service for your 2009 Yamaha YFZ450R 450, it is important to identify the correct lubricant and refill procedure. Note that a published capacity may not represent the exact amount needed after a routine drain, so confirm the proper level-check method before removing the drain plug.
What type of oil does a 2009 Yamaha YFZ450R 450 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.
How much oil does a 2009 Yamaha YFZ450R 450 take?
The listed engine oil capacity is 1.53 quarts. Since the amount required after a routine drain might differ from this figure, follow the correct level-check procedure during your refill.
Does synthetic oil automatically mean an ATV can go longer between oil changes?
Oil change intervals depend on your specific engine, operating conditions, and manufacturer requirements. A listing for a synthetic product does not mean it will provide a longer service interval for this model.

