Mercedes-Benz Forum - View Single Post - Slight idle vibration (intermittent)
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post #9 of (permalink) Old 02-26-2019, 04:53 AM
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Date registered: Dec 2012
Vehicle: 2003 S430
Location: Georgia, USA
Posts: 2,308
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The best way to use a fuel system cleaner is during normal short-trip driving, not on a long road trip. You get much more cleaning effect by repeated heating/soaking cycles than from just running it through on a long trip.

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