It is generally not recommended to mix different types or brands of engine oil in a motorcycle. Mixing engine oils can potentially lead to several issues:
Incompatibility: Different engine oils may have different formulations, additives, viscosity ratings, and performance characteristics. Mixing incompatible oils can result in chemical reactions that could lead to the formation of sludge, deposits, or other harmful substances that may impact engine performance and longevity.
Lubrication Performance: Engine oils are specifically formulated to provide the necessary lubrication and protection for motorcycle engines. Mixing oils with different viscosities or properties can affect the oil's ability to flow properly and adequately lubricate engine components. This can potentially lead to increased friction, premature wear, and reduced engine performance.
Warranty Concerns: Mixing different oils may void any warranty coverage provided by the oil manufacturer or the motorcycle manufacturer. It is important to follow the recommended oil type and grade specified in the owner's manual to ensure compliance with warranty requirements.
To maintain optimal performance and protect your motorcycle's engine, it is best to use a high-quality engine oil that meets the manufacturer's specifications and recommendations. If you need to change the engine oil, it is advisable to drain the old oil completely before adding the new oil, rather than mixing different oils together. If you are unsure about the proper oil to use or have any concerns, consult the owner's manual or seek advice from a qualified motorcycle mechanic or dealer.