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- Smooth Belts More common in scooters, these belts operate without teeth and rely on friction for power transfer. While less efficient than toothed belts, they serve well in urban commuting scenarios where speed and performance are less critical.
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It is generally used in the union of two lubricated parts, so that it hermetically seals both sides. Therefore, it guarantees the proper engine operation and helps to maintain the vehicle’s distribution system in better condition.
- The black spark plug is not a different type of spark plug in terms of function; it is simply a standard spark plug that has been coated with a black finish. This finish is not only aesthetically pleasing but also serves a functional purpose. The black coating helps to dissipate heat more effectively, which can lead to improved performance and a longer lifespan for the spark plug.
- In addition to preventing oil leaks, motor oil seals also help to keep out dirt, water, and other contaminants that could cause damage to the engine. By creating a tight seal, these seals ensure that the engine remains clean and protected from harmful particles that could affect its performance.
Foam inhibitors: This additive does exactly what it sounds like. Foam inhibitors keep motor oil from forming foam and bubbles. If foam and bubbles were to form, the oil would be unable to coat the important parts of the engine and keep it cool.
Its sealing edge comes in full contact with the shaft surface in order to provide excellent sealing performance.
(See Figure 3.)