How To Choose Oil Filer?

The main function of the oil filter is to filter the impurities in the oil, provide clean oil for the operation of all parts of the engine, reduce the friction loss of parts and improve the operation efficiency of the engine.

 

The oil filter is a vulnerable part of the automobile. The oil filter will be changed together every time the oil is changed. It is exactly because of this feature that there are many fake and shoddy oil filter products in the market. And how to identify the quality of oil filter is particularly critical for consumers.

 

 

The Harm Of Counterfeit And Shoddy Oil Filer

 

• The fake and shoddy oil filters do not only affect the normal oil supply and lubrication of the oil pump to the engine, but also the interface of the main oil passage may be poorly sealed due to rough manufacture. As a result, the oil will jump out at the joint surface between the filter and the cylinder block, resulting in oil leakage, poor engine heat dissipation and other faults, and it may cause cylinder burst in serious cases.
• The font printing on the filter surface is fuzzy or not clear enough, and the font printing paint surface is poor and thin.
• Without the bypass valve, once the filter is blocked, the engine will not get enough oil lubrication.
• After flameout, there is no function to inhibit the oil return, and the engine wear will be greater during cold start.
• The sealing material of gasket is poor, which may cause oil leakage and even fire under high temperature and high pressure.
• The filter paper has different materials, which is difficult to achieve the predetermined filtering effect.
• The metal oil supply network is rough in workmanship, so it is difficult to ensure sufficient oil supply.

 

Skills To Identify Good Oil Filter

 

Appearance Details

 

The oil filter produced by well-known brands does not only use good materials and workmanship, but also will not be careless in the treatment of appearance details. Only well-known brands are willing to invest in appearance details and do their best.

 

The following are the oil filter comparison between brands and shoddy：

 

• Shell comparison: the surface of the brand oil filter shell is smooth without deformation and scratch. The surface of cheap machine filter is rough and has scratches caused by wear.
• Printing comparison: the printing content of the brand machine filter shell is clear, and the boundaries of words and patterns are clear and not blurred. The printed content of the cheap machine filter shell is defective, and the text and pattern boundaries overflow.
• Packaging comparison: the opening of brand machine filter is usually plastic sealed to keep the opening clean. The opening of cheap machine filter is exposed without plastic sealing, and the surface is uneven and stained.

 

Rubber Ring Texture

 

The sealing rubber ring at the oil inlet and outlet of the machine filter is also one of the references to judge the quality of the machine filter. We can take off the rubber ring and knead it with our hands to feel the texture of it.

 

For a good mechanical filter, the material of its rubber ring will be very thick, and it will feel soft when pinched by hand, so as to ensure the tightness around the oil inlet and outlet. While the rubber ring of cheap oil filter is hard in texture and inelastic.

 

Whether There Is Check Valve Or Not?

 

Whether there is a check valve is also an important basis for judging the quality level of a machine filter. We can use the gadgets around us to identify whether the mechanical filter has a check valve structure.

 

The mechanical filter check valve is actually a rubber cup, which is a very simple component, but its function is quite important. It can block the oil return to ensure that the oil pressure can be formed in the lubrication system as soon as possible during the cold start of the engine, so as to ensure the oil supply and avoid dry friction.

 

Fixation Of Filter Element

 

For a good machine filter, the filter element will be firmly fixed inside the machine filter and will not shift when bearing the oil pressure and vehicle bumps, so as to ensure that the oil passes through the filter paper to complete the filtration. Therefore, the fixation degree of filter element can also judge the quality of a machine filter.

 

To judge whether the filter element of the machine filter is stable, just insert your finger into the filter element and press the inner wall to see if the filter element will shake. For a good machine filter, the filter element will be firmly fixed and will not shift when pressed with your fingers. While, the filter element of cheap machine filter is constantly shaking.

 

Whether There Is A Bypass Valve?

 

Under normal conditions, the bypass valve is closed, and all oil needs to pass through the filter paper to be fully filtered. However, the bypass valve will be opened in the following two cases to prevent dry friction of the engine: the first situation is that when the oil filter element is seriously blocked, and the other situation is that when the oil is very viscous (cold start at low temperature).

 

The opening pressure of the bypass valve of some inferior oil filters is too small, resulting in the bypass valve being open for a long time, and the unfiltered oil will directly enter the engine lubrication system.

 

Even some oil filter roots do not have the structure of bypass valve. When the filter paper is seriously blocked, the engine can only dry friction. Because the bypass valve is located inside the oil filter, it can only be observed by dissecting the oil filter.

 

In The End

 

This paper introduce the harm of a shoddy oil filter and the importance a good oil filter and some skills on choosing a good filter, and I hop it will be helpful for you. If you are looking for 2008 ford expedition oil filter, 2021 kia sorento oil filter, and 2020 jeep renegade oil filter, welcome to contact us.