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    VW507 OCI CATA

    I have a 2010 Audi Q7 with a (CATA) 3.0 V6 TDI. Blackstone Labs recommended I dial back my oil change interval from 10,000 to 7,500 due to above average Iron and aluminium. Has anyone been able to get a healthy UOA using the 10,000 mile OCI? If so with what oil?
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