The oil filter is not recommended to be reused after cleaning.
This is determined by the particularity, precision and complexity of the oil filter, as follows:
1. Particularity: oil filter, also known as oil grid. The function is to filter out the metal wear debris, dust and carbon deposits and colloidal deposits that are oxidized at high temperature during the working process of the engine, to keep the lubricating oil clean and extend its service life. The oil filter should have strong filtering capacity, low flow resistance, and long service life. Once these requirements are not met, irreversible damage will be caused to the engine;
2. Precision: The automobile's requirements for the oil filter are:
a. Filter out all particles larger than 30um
b. Reduce the particles that enter the lubrication gap and cause wear to be less than 3um30um
c. The oil flow meets the engine oil demand
d. The replacement cycle is at least longer than the life of the oil
e. The filtering accuracy meets the requirements of protecting the engine and reducing wear
f. Large ash capacity, suitable for harsh environments
g. Can adapt to higher oil temperature and corrosive environment
h. The lower the pressure difference when filtering the oil, the better, to ensure that the oil can pass smoothly;
3. Complexity: The oil filter is composed of filter paper, sealing ring, and various valves:
a. 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 changes, the concentration of the oil also changes accordingly. This will affect the filtering flow of the oil. The filter paper of a high-quality oil filter should be able to filter impurities under severe temperature changes while ensuring sufficient flow.
b. Rubber sealing ring: The filter sealing ring of high-quality engine oil is made of special rubber to ensure 100% oil leakage.
c. Backflow suppression valve: When the engine is turned off, it can prevent the oil filter from drying out; when the engine is re-ignited, it immediately generates pressure and supplies oil to lubricate the engine.