Can anyone confirm the diff oil capactiy for the W108 4.5 280se sedan?

I am getting conflicting numbers from my manual.

Apparently in my manual they list a "Enclosed type Axleshaft= 2.5 Liters", as well as a "Open Axleshaft type= 1.15 liters"

Thanks

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Current : 1988 R107 560SL

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