How effective are magnets for cars?

I believe some car owners have used magnetic oil. Its characteristic is to protect the engine before it operates. When the vehicle is started to the hot stage, because the oil has not completely covered the surface of the parts, the wear is particularly large, and the UMA magnetic molecules of the magnetic protection oil can be adsorbed on the surface of the engine like a magnet before the car starts, which greatly reduces the time when the engine starts. Of wear. UMA: It means protection before operation. It is clear that there are a large number of magnetized components in the oil additive component, which produces a large number of magnetic molecular clusters; thus making it (to cast iron cylinders, iron piston rings) adherent It also absorbs other oil components and participates in the protection of the engine! Moreover, the viscosity and fluidity of the oil can be improved (the same poles repel and different poles attract.)