Can waste oil still be used normally after filtering?

After proper and thorough filtration and purification, recycled waste oil can be fully restored to normal use. This is not only an important resource recycling technology, but also offers significant economic and environmental benefits.

Can recycled waste oil be used normally?

Yes, it can, but the correct process must be used, and the recycled oil must meet relevant national or industry standards.

The quality and suitability of recycled oil depend on several key factors:

The extent of contamination and initial quality of the waste oil: The degree of contamination and whether the waste oil has been mixed with other oils or chemicals determine its potential and difficulty in regeneration.

The sophistication of the regeneration process: 

Simple filtration only removes solid impurities, while in-depth purification requires the removal of moisture, acidic substances, oxidation products, and other substances.

Whether necessary additives are added: 

The excellent properties of new oil (such as anti-oxidation, anti-wear, and rust prevention) are due to the addition of various additives. These additives are gradually depleted during use and regeneration.

Therefore, a high-quality regeneration process typically includes "re-refining" and "addition of new additives" to restore its full performance.

Applications of Recycled Oil:

After simple filtration and sedimentation, it can be used in equipment where lubrication requirements are less stringent, or as a rough machining lubricant or rust preventative.

After extensive purification and regeneration, its quality can approach or even reach new oil standards, allowing it to be reused in the original equipment, such as engine oil, hydraulic oil, or gear oil. However, it is generally recommended that it be used in similar equipment or in applications with slightly lower requirements to reduce potential risks.

Precautions:

It is not recommended to use self-recycled oil in high-precision, high-value, critical equipment (such as luxury car engines and precision CNC machine tool spindles) unless you have specialized equipment and testing methods to ensure 100% compliance with quality standards.

For critical equipment, it is best to have the recycled oil inspected to confirm that it meets certain standards for viscosity, acidity, moisture content, cleanliness, and other indicators before use.

Recommendations:

If you're an individual or handling waste oil on a small scale (such as agricultural machinery or a small factory), consider purchasing a small vacuum oil filter. This is the most cost-effective option and can solve most problems.

If the waste oil has become emulsified due to severe water intrusion, consider a "coalescing + vacuum" combination.

For businesses, investing in a professional oil purification and regeneration system, while incurring initial costs, can significantly save on new oil procurement and waste oil disposal costs in the long term, resulting in significant economic and environmental benefits.