If you're going to add anything to the crankcase other than engine oil, I'd advise you to consider using kerosene rather than diesel fuel. The kerosene is a much more refined to clean solvent.

The introduction of a full synthetic fluid as your engine lubricating agent may improve the operation of your engine's innards as well.

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'06 E320 CDI
'17 Corvette Stingray Vert