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      12-11-2012, 11:20 AM   #5
JNoSol
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Drives: 750 MSPORT & E90M3
Join Date: Feb 2012
Location: Kansas City

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Try Lucas Fuel Treatment, it's petro based and doesn't have the harsh chemicals found in other brands that might destroy your o-rings. Just one tank before every oil change is good. It doesn't make sense to use it weekly as most quality fuel has a bit of cleaning agent in it already.

I haven't used any fuel treatment for any of my BMWs. I just gas at BP/Shell - high volume gas stations.
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