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Old 12-01-2006, 11:07 AM   #9 (permalink)
NüR-SPEC
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Date registered: Jul 2006
Vehicle: EURO 500SEL
Location: Mesa, AZ
Posts: 2,795
no power increase. higher octane will only benefit you with raised compression or more aggresive ignition advance. aside from that, it's just throwing money away. the only potential benefit is keeping the fuel system a bit cleaner, but the price difference doesn't justify it. oh yeah, do you work today? i was thinking about going down to German Car Service or whatever that place is called on scottsdale road.
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