A car engine depends on the oil that is used to pump it up. The oil may be a critical component to the engine, so one must always ensure that it is clean. Otherwise, the oil that runs through the engine, and in all its other outlets, will be polluted. The pollution may enter other parts as well, which may cause them to clog. A car engine's performance should not be halted like this. It should not happen if the owner will take the necessary precautions to get an oil filter. And what other...