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  1. S

    oil smell

    Have a 93 4x4 Silverado, 350, 5 speed manual, 110k miles. Sometimes it smells like oil (gear oil?) in the cab, especially when driving for more than an hour. The engine doesn't seem to leak anywhere. 4x4 works. It happens whether or not the fan is on. No other problems. Any ideas?
  2. S

    oil smell

    Have a 93 4x4 Silverado, 350, 5 speed manual, 110k miles. Sometimes it smells like oil (gear oil?) in the cab, especially when driving for more than an hour. The engine doesn't seem to leak anywhere. 4x4 works. It happens whether or not the fan is on. No other problems. Any ideas?
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