Half of the transmission failures are related to oil contamination. The maintenance of filters and gaskets is the key to vehicle maintenance

Recently, data from the maintenance and repair of the automotive aftermarket shows that about 50% of transmission failures are directly or indirectly related to oil contamination, and the clogging of transmission filters and the failure of oil pan gasket seals are the main causes of contamination and oil leakage. Industry experts caution that neglecting the regular maintenance of these two types of key components may lead to serious problems such as gear shifting jerks and power interruptions, and even endanger driving safety.

The transmission filter screen is known as the "cleaner" of the transmission system, responsible for filtering out impurities such as metal debris and carbon deposits in the oil. Experiments conducted by a certain automotive inspection agency have shown that if the filter screen is not replaced over 80,000 kilometers, its filtration efficiency will drop by more than 40%, leading to a threefold increase in the wear rate of the valve body.

However, the 316L stainless steel filter screen will directly lose its filtering function due to fatigue fracture caused by drawing process defects or work hardening. This problem is particularly prominent in some heavy-duty vehicle models. Maintenance cases of models such as Lincoln Navigator show that the displacement of the filter rubber ring may also cause unstable oil pressure and gear shifting shock and other faults.

The sealing performance of the oil pan gasket is equally crucial. Autohome's maintenance data shows that the aging and cracking of the gasket is the primary cause of oil leakage from the oil pan, accounting for over 60%. Traditional rubber gaskets are prone to failure when immersed in high-temperature oil, while the new standard recommends ethylene acrylate rubber (AEM) material, which can withstand temperatures above 150℃ and has a sealing life extended to over 80,000 kilometers. The integrated sealing gasket solution for oil pans made of composite materials launched by enterprises such as Shandong Sinoma has achieved a breakthrough of doubling the maintenance cycle and reducing the weight by 60%.

Industry standards are being tightened and regulated. The upcoming "Technical Specification for Energy Efficiency Grading and Labeling of Lubricating Oils and Filters for Automobiles" will, for the first time, incorporate the filtration accuracy of filter screens and the temperature resistance of gaskets into the vehicle energy efficiency certification system. Experts suggest that for ordinary family cars, the filter screen and gasket should be replaced every 40,000 to 60,000 kilometers, while for heavy-duty vehicles, the replacement interval should be shortened to within 40,000 kilometers. Moreover, when replacing, compliant products that meet the HG-T 6181-2023 standard should be selected.