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Old 09-06-2002, 04:58 PM
mpc mpc is offline
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Join Date: Jul 2002
Location: North Wales, PA
Posts: 8
New Fuel Filter Decreases MPG

I recently replaced the '89 300E fuel filter and have noticed a significant decrease in MPG (about 20 - 22 MPG pre OEM replacement and now @ 16-18 MPG). Any reasoning for this drop off would be appreciated....or should I be looking into some other system/part? Thank you.
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Old 09-06-2002, 05:53 PM
Posts: n/a
I can't see why or how a new (or old) filter would have any effect on MPG.
I'd look somewhere else for the solution to the problem
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Old 09-06-2002, 06:39 PM
Registered Diesel Burner
Join Date: Aug 2001
Location: Northern Virginia
Posts: 2,911
First thing that comes to mind - Check for leaks.

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