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What I want to know is whether one should do these changes more frequently than the factory programmed guidance? The car is programmed to assess use and so do we override that w/ rules of thumb like 'every 7.5k miles'? Not being argumentative, just something I have pondered.
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Just thinking of something not so witty
///M3 E92 '09 Jerez Black | 6MT | Ext Fox Red | Tech | Prem | 19s |Heated Seats | iPod |Smartphone | Euro Deliv June 09
Sold: 540iT / 530i / 323i |