An open differential wasn't offerred for the USA version 560's!
Most MB limited slip differentials will only lock up durning HARD acceleration, up to a 40-50% lock-up.

NO springs! only sintered brass & steel clutch discs, that is why you need special lube.

Does the car leave 2 black strips on pavement?

The clutches can be replaced w/o removing the differential. ONLY diff carrier removal is needed.

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