Hello, dear motor-talker! Once again, I’m talking about short-distance driving. The fact is that the wear is increased as long as the engine is still cold and has not yet reached its operating temperatures, including operating fluids. However, this is inevitable, because even before a long-distance driving starts the ride with cold engine. Problem is, however, that when a cold start and when driving in cold conditions, fuel/condensation water is used in the oil cycle in small quantities. This is only neutralized again by a longer journey in a warm condition. However, if you keep driving short distances and turn off the vehicle cold again, if you leave the engine no chance to remove the accumulated fuel/water from the circuit again. Thus, the dilution increases more and more. So I understood the whole thing once, please correct me if I am wrong. But now to my actual question: Is it possible at all, for example, by a longer motorway ride to get the undesirable substances that arise from the short distance operation out of the oil? In other words, is a one-hour motorway ride sufficient to “regener” the motor oil after a week of pure short distance again?