I mainly get gas from the two closest gas station from my home.
One is Shell and the other one is BP. I'm no petro-chemical
engineer, so I can't test the gas myself...
However, I have noticed that whenever I fill-up at the Shell station,
my MB's(W210 and W202) exhaust always have an extremely strong
What are the chances that the gas at this Shell station is bad or
contaminated? I spoke with the manager and he claims that
the smell is cause by the excellent cleaning properties of Shell's gas.
(seems like a very honest fellow, but again, I doubt he has a
degree in petroleum or chmestry)
If I fill-up at the BP station, the smell goes away in a day or two.
This has been going on for almost a year now....
I don't notice any difference in the car's performance or behavior
with either Shell or BP gas.... just the Shell's smell is bothering me,
especially when I warm up the car on a cold morning in the garage.