Neither the engines of Honda nor those of Yamaha have oil filters; they only have oil filter screens. From this perspective, is the engine design of Suzuki more reasonable and advanced? In fact, although the small-displacement engines of Honda and Yamaha do not have paper oil filters, their engines also have their own oil filtration methods, and the design is relatively scientific. The way they do it is that the engine oil first passes through a metal filter screen for coarse filtration, and then passes through a centrifugal filter oil cup beside the crankshaft for further filtration. As the engine oil passes through this device, the metal powder is thrown around the oil cup by the centrifugal device and retained. The filtered engine oil then flows out of the oil cup and is supplied to the entire vehicle's lubrication system.

The advantage of this filtration method is that the maintenance cost is low. Car owners who know how to maintain their vehicles only need to open the right hood of the engine and clean the centrifugal filter oil cup regularly. Moreover, it can be cleaned once every 20,000 kilometers. Some car owners only clean their engines when they are being repaired. If the engine is not repaired, they almost never clean it at all. The weakness of this method is that the carbonized particles of the engine oil are difficult to filter. Therefore, for small-displacement engines, the oil should be changed every 2 to 3,000 kilometers, and it is done when the engine is hot. The purpose is also to remove these carbonized particles of the oil to prevent the accumulation of sludge. If the engine oil of such an engine is not changed for a long time, when the oil cap is opened, a layer of black sludge will form on the inner walls of the engine parts. When buying a second-hand car, you can judge the car's regular maintenance condition from this point.

Suzuki's small-displacement engines do not have this centrifugal oil filtration device inside, but they have a paper oil filter element on the outside. The advantage of this filtration method is that the oil is filtered thoroughly. However, the oil filter element needs to be replaced regularly. If it is not replaced for a long time, the oil filter element will be severely clogged, or if a low-quality oil filter element is replaced, the oil will not be filtered at all. This seriously affects the circulation and lubrication of the engine oil inside the engine, thereby causing damage to the components. Many GS engines that are not maintained regularly have increased working noise, and this is the reason.

So, owners of small-displacement motorcycles need not worry at all. Although their motorcycle engines do not have paper filters, they are still filtered. As long as the engine oil is changed regularly, the engine can work clean and tidy. Moreover, the maintenance cost is relatively low. After the small-displacement Haojue was de-Suzuki, The ESR engine of GZS150 and the UHR150 engine are both set up according to Honda's centrifugal filtration method. How would those merchants who have deceived car owners with oil filters explain this?

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