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Message: <blockquote data-quote="ciklee" data-source="post: 499832" data-attributes="member: 22701">oh ya, forgot about the rust issue. how much is the anti-rust spray coating and where to get it done? can any body repair shop do it? bro haywire, did you de-tune your car so that it can run on our low quality fuel? or is it pretty much plug-and-play?any diesel owner can comment on maintainability of BMW oil burners? would the diesel fuel cause havoc with the fuel pump and injectors? do you need to always add additive to the fuel every fill up? I've read in the forum that the swirl flap might disintegrate and damage the engine beyond economical repair due to design problem with the flap itself. has BMW resolved the problem? from one article i read, the swirl flap can be removed completely without any effect whatsoever on engine performance. however, it was written by a company that sells plugs that replace the flaps so their side-effect assessment might be wee bit bias. any diesel owner has removed the flaps and notice any negative side effects?</blockquote>