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X1r has anyone used this.

Discussion in 'General Automotive Chat' started by shariain, Mar 14, 2012.

  1. shariain
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    shariain Well-Known Member

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    I was thinking about buying some of this after one of my workmates used it in his BMW 525 and he was saying he found a slight increase in fuel economy and a reduction on engine noise. Just looking to see if anyone else has tried it or known anyone that's tried it.

    X1R Performance Engine Treatment NASA Used & Approved

    http://bit.ly/xFfOMs
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