Technical characteristics of oil filters
Filter paper: Oil filters have higher requirements for filter paper than air filters, mainly because the temperature of the oil varies from 0 to 300 degrees. Under severe temperature fluctuations, the concentration of the oil also changes accordingly, which will affect the filtration flow rate of the oil. High quality engine oil filter paper can filter impurities under severe temperature changes, ensuring sufficient flow rate.
Rubber sealing ring: The high-quality oil filter sealing ring is made of special rubber, ensuring 100% oil leakage.
Backflow suppression valve: only available in high-quality oil filters. When the engine shuts down, it can prevent the oil filter from drying out; When the engine is ignited again, it immediately generates pressure and supplies oil to lubricate the engine.
Overflow valve: only available in high-quality oil filters. When the external temperature drops to a specific value, or when the oil filter exceeds its normal service life, the overflow valve will open under special pressure, allowing unfiltered oil to flow directly into the engine. Despite this, impurities in the oil can enter the engine, but compared to the loss caused by the absence of oil in the engine, it is much smaller. Therefore, the overflow valve is the key to protecting the engine in emergency situations.