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oil additives stuck rings

  1. Ford F-Series, Ford Super Duty, Ford Diesel
    The wet test only brought it up to 80 lbs. When I brought it back from the shop I noticed it wasn't vibrating when I applied the gas pedal like it did before, so I assume the oil test freed up the rings. I've driven it about 10 miles since with it still not shaking. Previously it was very...
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