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coolant loss

  1. Coolant loss 95 7.3 psd

    Power Strokes 1994-1997 General
    Hello, I have a 95 f350 with 7.3 and I am losing 2-3 gallons every 200-300 miles. It's not leaking anywhere I can see, it is not smoking out the tailpipe (except one thick cloud at startup after sitting all night), and I have not fuel in coolant (that I can tell) and no coolant in the oil...