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Old 02-25-2015, 09:39 AM
DieselPaul DieselPaul is offline
is thinning the herd
 
Join Date: Mar 2010
Location: Columbus, Ohio
Posts: 3,339
Quote:
Originally Posted by kwontumspeed View Post
okto, any update to your situation?

I just ran into this same scenario. Replaced my plugs, Bosch non-resistor, with OE Mercedes plugs and my mileage took a DIVE. I would consistently get around 310miles per a full tank. Now I can't even reach 285. Sure, there's a little variance there depending on how much the tank takes per fill but I could *always* rely on 310-320 prior to the change.

Edit: The plugs that were removed show no signs of any malfeasance.
As far as I know the dealer will sometimes give you resistor plugs now when you ask for plugs for one of the older cars. Are you sure they are non-resistor? The counterman does not necessarily have any idea what that means.
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