Thread: BG 44K
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      09-05-2012, 11:01 PM   #4
tibra1
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Drives: 2011 ZCP M3 - 2007 335i crashd
Join Date: Apr 2009
Location: NYC

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I have used BG 44K..hard to find but its really professional grade stuff..had a Nissan that smoked something awful..cleaned the valves with one treatment

Not sure its necessary for an M3 unless it had really high mileage..I generally use techron, every 10K miles or so.