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What Are the Uses of Waste Engine Oil?

2 Answers

DeEva

07/28/25 4:39pm

Waste engine oil itself is not significantly damaged; it's just that the additives inside have expired during use, and it contains impurities from the engine. After refining and adding new additives, it can be regenerated into engine oil and returned to the market with unchanged performance. Below are the specific uses of waste engine oil: 1. Lubrication: Waste engine oil can still provide lubrication for parts that do not require high-performance lubricants. For example, bicycle chains, metal hinges such as those on excavator or loader cabins, and other mechanical parts can be coated with waste oil to achieve lubrication, friction reduction, and rust prevention. 2. Anti-corrosion: At construction sites, waste engine oil can be applied to building templates to prevent them from sticking to concrete, and it also offers rust and corrosion protection. 3. Fuel: While diesel refined from waste engine oil may damage vehicle fuel systems if used in cars, it poses no major issues when used in stoves for catering businesses or machinery factories. Moreover, fuel derived from waste oil is significantly cheaper than market-priced gas, making it an attractive option for some catering businesses and machinery plants.

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LaNolan

08/11/25 11:24pm

Back when I ran an auto repair shop, I often dealt with used motor oil from oil changes. While it can't be directly reused in vehicles, it has significant recycling value—like being refined by specialized companies into fresh lubricants or diesel additives, which is far more eco-friendly than disposal. Occasionally, I'd repurpose small amounts to lubricate garage tools or door hinges at home, but only if thoroughly filtered to avoid damaging equipment with contaminants. Remember, it contains heavy metals and pollutants—haphazard dumping can poison soil and water sources. I once saw a neighbor's careless disposal kill off an entire patch of grass. Now, I strictly collect it in designated containers for drop-off at local recycling centers, where it's processed safely and efficiently. Adopting this habit saves money, protects the environment, and benefits the community.

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