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Choosing between mineral and synthetic oils may not be purely a question of budget. A number of factors go into deciding which kind to choose, including the type and age of the vehicle and the local climate.
Synthetic or part synthetic oil is recommended for many modern vehicles, especially motorcycles. Conversely, mineral oil tends to be recommended for older engines, since synthetic oil can lead to the breakdown of aging components, and is more likely to transfer contaminants and particles around the system. Synthetic oils are especially well suited for vehicles with high-tech engines such as those that might be found in premium segment vehicles.