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Old 02-23-2013, 07:43 PM
RockChips RockChips is offline
Officially Welcomed to the 'Fest
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Join Date: Jun 2012
Posts: 627
Mein Auto: 2008 X5 3.0si
Even using the best gas around, like Chevron or Shell is not good enough IMO.

Look into Techron, Redline SL-1 or Regane. Or BMW's fuel additive as recommended by the manual.
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