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Is It Necessary to Clean Engine Metal Shavings During the First Maintenance?

2 Answers

DiManuel

09/01/25 6:04am

There is no such thing as cleaning engine metal shavings during an oil change. If there were, the oil filter would block these metal shavings. Metal shavings are handled automatically: Over time, automatic transmissions experience wear and generate some metal shavings. Typically, there are magnets inside that attract and retain these shavings. However, there is no need to add any protective agents or cleaners. Cleaning agents and protectants cannot dissolve metal shavings or other substances, nor do they provide any protective effect. This claim itself is unscientific. Cleaning cycle: If there are no issues, cleaning is unnecessary. The oil lubrication system has an oil filter to handle contaminants. Regularly changing the oil and oil filter is sufficient. Even if cleaning is performed, it is advisable to drive another 2,000 kilometers before replacing the oil and oil filter again to ensure any residual cleaning agent does not affect the oil's performance.

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OGiselle

09/13/25 8:41am

As a veteran auto mechanic with over a decade of experience, I've seen numerous cases of first maintenance for new cars. When it comes to cleaning engine metal shavings, it's usually completely unnecessary. Modern engines have extremely high machining precision and undergo cold running-in before leaving the factory, leaving minimal residual metal particles. Those tiny shavings are primarily filtered by the oil filter and removed during the first oil change. I've seen many people spend hundreds on cleaning services, only to find the oil pan spotless when the engine is opened. Rather than doing unnecessary cleaning, sticking to regular oil changes with quality oil is the real way to protect your engine. If the dealership tries to upsell this service, just decline - since it's not even mentioned in the manual, why waste the money?

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