One of the salesman at the dealer where I purchased my car recently told me NOT to use Petro Canada or Shell. I should use Esso or Sunoco. (my car is an '04 C230 Kompressor Sedan)

Does anybody have any opinions on this? I THINK it is because of how certain brands of gas cause damage to the fuel level sensors due to high sulphur content. There was a big stink recently with the oil companies pointing fingers at the car companies, and vice versa, when people apparently ran out of gas even though the needle showed at least 1/4 full.

I would think that even if the fuel level sensor got messed up, it should be repaired under warranty, as the manual only stipulates what octane to use.

Shell just lost a huge lawsuit over their fuel quality detroying certain fuel level sensors.
Petro Canada............how much octane is in water ?
Some time ago, Ford evaluated all common fuel brands, guess who rated the worst...........Petro Canada.
Recently had both of my fuel levels senders replaced, luckily, just under warranty.
The replacements have gold plated contacts & should take care of any sub-standard fuel composition.
Apparently M-B's & GM fuel level sensor problems are only occuring in North America.
Esso & Sunoco are okay.

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2007 C 230 Sport.

I had a similar experience using Shell. After filling up the tank full, my fuel gauge behaved wildly! It sat right "down" and the Orange "Empty" indicator light was on. It went back to normal - right on full, no light on - after a few minutes of driving.

I drove the car until I had a 1/4 tank left. Started using Sunoco exclusively from that point on and I haven't used anything else. The frightening, "may have to change fuel sending units," occurence never happened again!

My best friend had a 2002 C230K Coupe. He used Esso exclusively for 2 years and didn't have any problems. Try doing a search - you should stumble upon numerous posts regarding this topic.

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1998 C230