Mixing different types or brands of engine oils for motorcycles can have various effects on the engine's performance and longevity. Here are a few things to consider:
Viscosity: Engine oils come in different viscosity grades, such as 10W-40 or 20W-50, which determine their thickness and flow characteristics. Mixing oils with different viscosities can alter the overall viscosity of the blend, potentially affecting how well it lubricates the engine components. If the viscosity becomes too low, it may lead to increased engine wear, while high viscosity can cause inadequate lubrication and increased friction.
Additive Compatibility: Engine oils contain various additives to enhance their performance, such as detergents, dispersants, anti-wear agents, and corrosion inhibitors. Different oil brands or types may have different additive packages, and mixing them can result in chemical reactions or inactivation of certain additives, reducing their effectiveness.
Oil Performance: Mixing oils with different formulations may affect their overall performance, including their ability to withstand high temperatures, resist oxidation, and maintain proper lubrication over time. Some oils are specifically designed for certain types of engines or operating conditions, and mixing them might compromise their intended benefits.
Warranty Concerns: Mixing different oils could potentially void the manufacturer's warranty, as using an unapproved oil blend may not meet the specifications recommended by the motorcycle manufacturer.
To minimize potential risks, it is generally recommended to follow the manufacturer's recommendations and guidelines regarding oil type, viscosity, and change intervals. If you need to change your motorcycle's engine oil, it is advisable to drain the existing oil completely and refill with a single type and brand of oil that meets the manufacturer's specifications.