Got some bad gasoline what can I do?
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From: school west coast-Summer Internships Va and Bmore
E55 (for sale if the right offer comes along)...too many others to list
Got some bad gasoline what can I do?
I was almost out of gas and had to put cheap 91 octane in my 55. My car has been running rough since then. What can I do to clean it out? It runs a little sluggish.
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Joined: Nov 2004
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From: So. Cal.
2006 CLS55-030, 2002 BMW 540 Wagon, 1995 VW Jetta GLX
Don't Worry - Be Happy!
BENZGal - You will not hurt the 55 motor running 91 Octane fuel. The Engine Management System will dial back the advance timing curve to accomodate the lower octane. Kal-E-fornians (per the Govenor) can only get 91 Octane gas, so we have to deal with this all the time, and yes your 55 will feel a little sluggish because the the advance timing curve has been retarded by the Engine Management System. Not to worry, as soon as you run the 91 Octane fuel down to as close to empty as possible just put the 93 Octane fuel, you have been using, in and feel the lost power come back. 
- Bob
- Bob
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
I agree...in ole Salt Lake City, we run 91 only...no probs. Now BAD gasoline...that is another question...water, stagnant gas etc....that's a whole different ball game. My rule of thumb is when travelling out of my area, to try to hit stations that have a lot of traffic....almost impossible for owner to tinker with the gas (adding water etc) plus with that much product running through the pumps, not that much chance of contaminants....plus we all know never to get gas while the big truck is refilling the tanks (it stirs up the crap on the bottom of the tanks as they fill). Maybe for your other car it's okay, but never take the chance with the BEAST.
All the best in 05.
All the best in 05.
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From: school west coast-Summer Internships Va and Bmore
E55 (for sale if the right offer comes along)...too many others to list
I think it was bad gas. I have filled my car up twice since then. It was one of those cheap Thrifty gas stations. I usually use 76 or Chevron. I think my baby hated it. Oh well!
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From: Ventura County USA
'06 E55, '05 SLK55, a few others
Max of 91 in Cal. no matter what station you go to. Hey Angie, try a bottle of Slick 50 fuel treatment, seems to work pretty good cleaning out "old" gas.
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From: school west coast-Summer Internships Va and Bmore
E55 (for sale if the right offer comes along)...too many others to list
Thank you Brad. I put something in this weekend that fixed it. My beast is back! I talked to my customer that ownes a gas station and he told me that the additives are different in cheap 91 octane vs. expensive 91 octane.
