Engine oil, also called, motor oil, is used to produce a lubricating film on the moving parts of an engine. But what is the best oil to use for your particular engine?
You might say Castrol, Valvoline, or maybe even Quaker State is the best oil for your `old Nelly. And true, it is wise to select a name brand oil. But what's really important here is whether the specifications of that oil are right for your car or not.