For 2011 A6 C6 facelift Audi recommends to use: VW 505 00, VW 505 01, VW 507 00, VW 501 01, and VW 502 00 engine oils. To select the right engine oil see the table below. How much engine oil you need to put into 2011 A6 depends on the engine installed, and some other conditions listed below.
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