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Engine oil consumption issues

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Old May 11th, 2021, 15:24   #11
Sotosound
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Would tiny amounts of engine oil getting into the combustion chamber of a diesel engine create significantly more soot?
I imagine that this is something that Volvo has checked out as they have the tools to do so. It would be nice if they shared their findings, but I don't expect this to be happening anytime soon.

If, however, the USA suddenly saw great value in running diesel cars then it would all change.

I agree that it is probably very tiny amounts of engine oil but, then again, there are only tiny amounts of diesel getting into the combustion chamber.

It's more about the fact that this impure mix can easily be combusted in each cylinder 50,000 times over an hour's drive.

My wife's 2015 V60 D3 is currently quite capable of getting through 0.5 litres of oil over 500 miles. Imagine the amount of smoke and soot that 0.5 litres of burning diesel might generate. If only a small fraction of that soot remains in the combustion chambers then it's a big problem.
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Old May 11th, 2021, 15:50   #12
volvo s60 2001
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Would tiny amounts of engine oil getting into the combustion chamber of a diesel engine create significantly more soot?



If we think logically, that tiny amount of oil is not calculated in the mixture, so we'll have no fully efficient burn and more rubbish getting out of the cylinders. The DPF catch most of it and this is why we don't see anything at the exhaust, but as we know some of the exhaust gases are circulated inside the engine via the EGR and this is where the problems start IMO.
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