Oil and Oil Filters
Saturn S-Series

Why does the oil turn black after a week?


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2015-07-17 17:30:58
2015-07-17 17:30:58

How many miles are on your engine?

Do you know how often the oil has been changed in the past?

you need to replace the oil filter, without it, it is unable to extract carbon, acid and moisture from the oil which turns it black

If your car burns oil, more carbon is created because oil is designed not to burn so when it does it makes soot. The oil dilutes faster

oil turning black is normal. all engines produce some blow-by around the rings, and these spent gases contain carbon, a by-product of combustion. the carbon is dissolved into the oil where it can be removed from the engine during oil changes.

I've seen this lots. On new vehicles like 2005's... no, the oil will still look brownish. On older vehicles, it comes out black, you change it, you start it, you check it... black. There is still a bit of oil left after an oil change and it will get darker and darker. If your vehicle is new... get her checked out.


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what do u mean about quick One day, one week , one month.

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All oil turns black over time. Most of the black comes from small particles that are trapped in the oil. Also, carbon from the incomplete combustion of gasoline is held in the oil. It is impossible to get all of the oil out of an engine unless the engine is taken apart and cleaned. This left over "dirty" oil can cause new oil to darken.

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Black or brown but is another chemical is mixed it can turn different colours

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