VW engineers have admitted manipulating CO2 emissions data-paper

Re:VW engineers have admitted manipulating CO2 emissions dat... by lclemente on Monday November 09, 2015 @06:28AM (#10532418)

Does anyone know how putting diesel into the motor oil causes the engine to "[run] more smoothly and [use] less fuel"?

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Re:VW engineers have admitted manipulating CO2 emissions dat... by kenz0r on Monday November 09, 2015 @06:31AM (#10532427)

It thins the oil, so there are less frictional losses, at least until the bearing surfaces get damaged.

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Re:VW engineers have admitted manipulating CO2 emissions dat... by chrismbarr on Monday November 09, 2015 @06:53AM (#10532514)

So why isn't oil like this normally? Are the downsides to doing this?

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Re:VW engineers have admitted manipulating CO2 emissions dat... by jacquesm on Monday November 09, 2015 @06:58AM (#10532529)

Yes, it shortens engine life.

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Re:VW engineers have admitted manipulating CO2 emissions dat... by maxerickson on Monday November 09, 2015 @07:32AM (#10532637)

There is a general trend towards specifying lower viscosity oils:

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