Figure 6: Oil seals for cars

Like any element of the engine, oil seals are subject to wear. Over time they can lead to possible leaks of lubricating liquid.
Oil seals go by many names, such as shaft seals, dirt seals, grease seals, lip seals, and many other variations of these. They are essentially simple devices used in rotary shaft equipment to prevent lubricant from escaping and for excluding contaminants such as dust, dirt and water. An oil seal’s most important function, however, is that it protects every type of ball, sleeve and roller bearing in the rotating shafts. The seals also prevent the integration of two different fluids that shouldn’t mix, such as oil and water.
Acrylate natural rubber (ACM)
High mileage oil is specifically designed for cars with more than 75,000 miles. This type of oil can help reduce oil consumption, minimize leaks and oil seepage, and can also help reduce smoke and emissions in older engines.

motor oil seal. Signs that a motor oil seal may be failing include oil leaks around the engine, low oil levels, and unusual engine noises.