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#64084
amuller
Participant
    quote Tubs:

    .The air contains a certain amount of water
    depending on where you live. It can be seen
    on the lawn or you cars in the morning before
    it goes back into the air. On a rainy day the
    air is saturated with water that is pulled into
    an engine as it runs and its not an issue for
    the converter. What would be an issue is the
    oil. Putting a gallon or 2 of gas that has 6 or 8
    ounces of oil per gallon into a cars gas tank
    that is half or less full could possibly overwhelm
    a converter. If it was to cause a partial blockage
    that would increase the load on what that remains
    open. This could lead to a failure at a later time.
    The oil wouldn’t the best thing for the Oxygen Sensor
    either. Here is a link to what will cause a converter to
    plug up.
    http://www.bobsmuffler.com/reasons_for_a_converter_failure.htm

    That’s my concern over using it in a modern car. Modern automotive power plants are complex and expensive to repair. Just check the price of an injector! I have no problem using it in an old tractor or whatever. Phase separation seems less likely to me with 10% ethanol content, as the ethanol is miscible with both water and hydrocarbons, but maybe I’m missing something here.