Assertion: motor oil's additive | /r/CapableOf | do good job
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Source sentences:
text: As good as the air filters, ring seals and oil itself are at keeping contamination levels down, there will undoubtedly be an amount of debris of some sort in the oil that needs to be dealt with, and even though the additives in the oil do a good job of holding the debris in suspension and impede contact with engine’s components, they still need to be removed, and that’s where the filtration system comes in.