E-Class (W211) 2003-2009

Gasoline grade and new E? surprise!!!!

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Old Jun 9, 2003 | 09:40 AM
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IQguy's Avatar
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From: Northern California
E 320
Question Gasoline grade and new E? surprise!!!!

Have new E and am using 91 octane premium unleaded fuel.
Met 2 folks this weekend at social event who have had MBs for over 5 years and inform that they have always used 87 octane (cheapest unleaded gasoline)

Wondering what MB owners on this forum opine?
Can you put routinely unleaded cheapest gas in new E????
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Old Jun 9, 2003 | 09:44 AM
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From: Houston, TX
2003 E500
I always put the highest (93?) my local gasstop has. But then again.. I have always done that.. even with my bimmer.. and my blazer before that.

Along the same lines.... does anyone here use the "fuel injector" additives to clean injectors? I use to add some techron in a bottle to my bimmer about every 2 months.. seemed to work well. E class manual warns AGAINST this. Just wondering...

Peter
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Old Jun 9, 2003 | 09:46 AM
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rayscar's Avatar
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2003 MB E500
Not according to the manual. Maybe older E's didn't need the higher octane. I would not go below the level specified by the manual.
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Old Jun 9, 2003 | 12:25 PM
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haven't read the manual front to back yet, but the dealer told me to use only premium. mp
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