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What is the best motor oil for most engines?

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Quick Answer

The best motor oil for most car engines depends on the relative age of the car. Synthetic motor oils, such as Amsoil Synthetic Blend 15W-40 Heavy Duty Motor Oil and Mobil 1 10W-30 Full Synthetic Motor Oil, are best for most cars, while older cars may require higher viscosity oils.

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Full Answer

For cars considered older or "classic," one of the best motor oils is Valvoline Premium Conventional SAE 50W Motor Oil, which is a faster-flowing and thinner oil. It is important to note that motor oils can differ by brand. A local mechanic can provide an answer uniquely suited to a particular vehicle.

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