My boss told me one today, where you replace the oil in your crank case with diesel fuel, and then run it for 5 sedconds and it's supposed to flush the crank case and remove sludge and crap. I think it's BS. I'd approve a 20% replacement for a flush but not 100%.

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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