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I was told by a mechanic (reputable-head mechanic at dealership) to not buy certain brands of gasoline,?

that they are "dirty" and clog up the catalytic converter. Is this true? How would I go about verifying this allegation? The two brands he said not to buy are the most convenient by far. I have to drive quite a distance to buy the name brand gasoline/s he recommended.

As a natural skeptic, I am dubious, but am complying, thus far.

2 Answers

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  • J J
    Lv 7
    7 years ago

    Oh yes the old wife's tails are still alive and well. The fuel of today is not what your grand dad used. Stop worrying about the type of fuel you us. You don't see cars broke down all over the place anymore do you?

  • 7 years ago

    What he has stated is pretty much the norm. The train of thought is. . . the cheaper the gas, the worst type of gas it is. From what I understand Arco is one of the worst as far as dirty, cheap gas.

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