![]() This temperature range is known as the “heat range” In order to keep the engine running at top condition, and prevent the above mentioned troubles from occurring, each spark plug functions within a recommended operating temperature range. Material: Made of special high-resistance carbonized cast iron to implement self-lubricating performance. Machining profile: High-precision (microscopic) machining is required to make piston rings. Genuine parts are not perfectly circular (right) and their shape varies by engine to ensure best engine performance. Yamaha Genuine Oil Filter Genuine Yamaha oil filters are the result of careful research and development efforts taking all these conditions into consideration. As a leading manufacturer of motorcycles, Yamaha has set forth very strict standards with regard to the filtration power of the filter paper, the quality of adhesives, the spring pressure of the relief valve, etc. Only products of high-quality materials and sophisticated assemble technology are offered to the market as Yamaha Genuine oil filters. An oil filter prevents infiltration of foreign matter into the engine The engine is an easy victim of fouling due to combustion in the combustion chamber and movement of engine parts. Impurities in the fuel and oil can easily turn into sludge and friction between the cylinder and piston rings can create fine metallic powder. This fouling is washed away by engine oil so that the engine can maintain its normal function. ![]() However, since engine oil is used continuously over a long period of time before the next periodic renewal, the sludge and metallic powder are often released back into the engine. Oil must be protected from deterioration due to repeated fouling. The oil filter id designed to prevent re-fouling of the engine and deterioration of engine oil due to fouling, thereby prolonging the oil’s life as much as possible. ![]() Various conditions that affect the oil filter Engine oil is subjected to large load when the engine is running resulting in a rise in both oil pressure and temperature. The oil temperature sometimes rises to as high as 150☌ in a high-rev type engine. Since the oil temperature is exposed directly to extreme pressure and temperature, high resistance against oil and heat is required of oil filters. When the engine oil is still new, oxides created by sludge are neutralized by neutralizing agents and other additives in the engine oil thereby maintaining the oil’s original performance. ![]() Therefore, effects upon the oil filter are kept within the design data. These oxides have harsh effects on the filter paper, gasket, adhesive and other elements of the oil filter.Īfter the oil has been used over a long period of time, however, it loses some of its neutralizing power and the oxides tend to remain in the oil. ![]()
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