I don't have the option to park this thing -- it's my daily driver. Now, since oil pressure is up to 3 bar around 1,400 RPM, I would assume we're not at a critical stage here.

I'm going to pay a visit to a local MB dealer and get a new sending unit.

Does the oil need to be drained from the engine to replace the sending unit?

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84 300SD - bought in April '06 with 237,000 mi