The oil filter filters impurities and contaminants from the engine lubricant and ensures the engine is supplied with pure lubricant the whole time, enhancing cleanliness, minimizing wear and extending the service life of the engine.

I. Spin-on oil filter

1. Shell: constructed from high quality galvanized sheet steel, with excellent corrosion resistance, blast resistance and compression resistance.

2. Screw thread cover plate: synchronized continuous stamping with fine grinding tools and one-off forming with fully automated riveting technology. The screw thread is cold extruded and cleaned with high efficiency ultrasonic waves with 100% verticality inspection to ensure that the screw thread is 180° parallel to the base.

3. Central tube: adopt high-grade galvanized sheet material for rotating and rolling, with better anti-extrusion strength, less deformation, which can completely satisfy the impact of oil circuit pressure and avoid deformation of filter paper.

4. Sealing ring: Japan's high-quality rubber material, superior sealing performance, as well as effective oil resistance, aging resistance, anti-high and low temperature performance.

5. Bypass valve: in the case of special circumstances such as when the filter is beyond the replacement cycle, the filter paper being severely clogged or when the oil is at a low temperature and too viscous to pass through the filter paper, the bypass valve turns on automatically in case of emergency and the oil is directly delivered to the engine through it. High-quality nylon gaskets and springs, as well as precise auto-opening valves guarantee an adequate amount of oil supply to the engine against dry grinding.

6. Anti-leakage check valve: automatically turns off under the engine off state, preventing the lubricant in the filter from flowing back and draining out effectively. Upon starting the engine the following day, the anti-leakage check valve automatically opens to guarantee that the lubricant in the filter is supplied to the engine immediately, thus avoiding the instant start-up damage to the engine.

7. Filter paper: specialized in the development of impurity particles in the oil, selected excellent mixed fibers, folded evenly and neatly, filtering efficiency of up to 90% or more, with effective capture of fine impurities, high filtration accuracy, adequate oil capacity, high-level dust capacity and a longer service life. Pre-heating and shaping curing effectively enhances its firmness and resists the influence of strong oil corrosion and other conditions such as alternating between high and low temperatures on the filter paper which guarantees continuous and effective filtration.

Ⅱ. Paper element oil filter

Awa filter paper eco-friendly paper element

The Japanese Awa filter paper, which is often used in Japanese high-end cars with large discharge, features high thickness and great holding capability, with a thickness of 1.02mm and a corrugation degree of 0.41mm, providing a superior firmness and tenacity, effectively eliminating the bending or deformation of the filter paper due to strong suction. Moreover, the filter is equipped with nano-glass fiber, which has an average pore size of 78.9u, and is evenly distributed, with sufficient air permeability, great density and high filtration precision.

German filter paper eco-friendly paper element

The third-generation filter material adopts German non-plant fiber and multi-layer gradient composite, featuring lightweight, high tenacity and firmness, less deformation and inversion, as well as superior filtration accuracy.

Nylon mesh eco-friendly paper element

For high-end cars with powerful engines with large displacement in Europe and the United States, which require large oil capacity, the nylon mesh filter paper is used for this purpose, with excellent heat resistance, not easy to carbonize and sufficient oil capacity.

Usually, the service life of the oil filter is relatively limited, requiring replacement once every 5,000-10,000 kilometers or six months, with appropriate adjustments to the replacement cycle depending on the condition of the vehicle and the climate, as well as the grade of the lubricant and fuel.

1. Preparation for replacement:

Park the vehicle on the lift, switch on the parking brake, start the engine to heat it up to normal temperature, and then shut down the engine and wait for a period of time so that the oil flows slowly back into the oil pan.

2. Drain the oil:

Remove the oil filler cap from the engine cylinder cover, lift the vehicle, disassemble the oil drain bolt on the oil pan as illustrated below, and empty the oil into the container.

Usually, the engine oil filter is on the upper part of the engine. For discharging the oil, the oil filler cap should be opened and then the oil filter shown below should be loosened with a proper wrench to enable the oil inside to flow into the crankcase.

① When the engine oil is completely discharged and leaves no oil dripping out of the oil drain, tighten the oil drain bolt back to the specified torque, which is generally 34~44N.m;

② Lower the vehicle, place the oil filter wrench on the back of the oil filter, unscrew the oil filter and remove it;

③ Take out the new oil filter and coat the seal of the new oil filter with new engine oil;

④ Gently fasten the oil filter into its position, ensuring that the oil filter seal is in full contact with the base;

⑤ Then screw the oil filter with a torque wrench following the specified torque, which is generally 12~16N-m.

The oil filter filters impurities and contaminants from the engine lubricant and ensures the engine is supplied with pure lubricant the whole time, enhancing cleanliness, minimizing wear and extending the service life of the engine.