Fuel Filter - Mercedes-Benz Forum

 
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post #1 of 9 (permalink) Old 11-23-2013, 07:29 AM Thread Starter
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Fuel Filter

According to my service record, my fuel filter was replaced 3 years ago, some 60k miles ago.

What is the service schedule for this filter? What are the symptoms of a dirty fuel filter?
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post #2 of 9 (permalink) Old 11-23-2013, 08:06 AM
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On my 2001 E320 the interval is 60,000 miles but I didn't have mine replaced until 80,000. It never had any symptoms of a fuel system restriction but those should be a hesitation or stumbling, especially going up inclines, as if the engine is gasping for fuel.

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post #3 of 9 (permalink) Old 11-23-2013, 01:44 PM
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Originally Posted by mis3 View Post
According to my service record, my fuel filter was replaced 3 years ago, some 60k miles ago.

What is the service schedule for this filter? What are the symptoms of a dirty fuel filter?
Depends on the car. My 2008 SL is every 60K miles. My 2011 E550 is every 15 years/150K miles. Check online - you should be able to find a PDF that lists all the maintenance for your model - that would be the definitive guide.
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post #4 of 9 (permalink) Old 11-24-2013, 11:03 AM Thread Starter
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I found it. For my car, 2004 CLK320, the service schedule is every 65k miles.

I think that the main factor is the quality of local fuel. I always use first tier premium gas like Shelf, Esso for my w209. I will wait for symptoms before replacing it. I just want to make sure that it will not fail all of a sudden.

Last edited by mis3; 11-24-2013 at 11:05 AM.
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post #5 of 9 (permalink) Old 11-24-2013, 02:31 PM
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...I just want to make sure that it will not fail all of a sudden.
You will have symptoms long before that and it should feel like fuel starvation.

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post #6 of 9 (permalink) Old 11-24-2013, 03:36 PM Thread Starter
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I have had 2 occasions when my car hesitated at traffic lights. Both time I thought of a dirty fuel filter.

The culprit of the first occasion was a defective MAF sensor and it was replaced by the dealership under warranty.

The second occasion lasted for a few days and it went away by itself. Possible culprit for this one was bad gas when I tried Costco gas at the time. This is why I now insist on tier 1 gas.

Last edited by mis3; 11-24-2013 at 03:41 PM.
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post #7 of 9 (permalink) Old 11-24-2013, 09:30 PM
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I worked for a new car dealer in the 70's. We used Mobil products. Our gas was delivered from a terminal that Citgo also used. Being curious about the "new" unleaded fuels I asked a delivery truck driver the difference between Mobil, and Citgo. His answer was that there were a few drops of an anti-knock compound added between the two. When I used to live back East I would drive by a major petroleum distribution complex, and all the tankers from the majors, and lesser brands were coming in and out of there.
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post #8 of 9 (permalink) Old 11-24-2013, 10:25 PM Thread Starter
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I have seen this too. I frequent Montreal and I can see all brands of, major and lesser brands, coming from the same refinery in the east end. I believe that additives are what make the difference of one brand from the other.
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post #9 of 9 (permalink) Old 11-25-2013, 07:16 AM
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I have seen this too. I frequent Montreal and I can see all brands of, major and lesser brands, coming from the same refinery in the east end. I believe that additives are what make the difference of one brand from the other.
I think this is true around here too. Marathon runs a refinery about 15 miles from my house and the additive packs are, more than likely, the only differences. But like you, I only use top tier fuels; Shell in my case.

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