- By cannonball
The largest constituent of engine oil is its base stock(s), made up of long-chain hydrocarbon molecules. The most basic fact about such oils is their viscosity, which is their internal friction. When parts begin to move, it is viscosity that causes oil to be dragged between parts, forming a layer that in hydrodynamic lubrication completely separates the parts such that zero wear takes place.
What’s in your oil? #BoxingDay #Motorcycles