thermostat housing

  1. R

    6.2L Leaking Coolant at the Thermostat Housing

    My GEN1 has developed a miniscule leak at the thermostat housing. Very minor - an ounce or two every time I drive it. I've replaced the o-ring with the (astoundingly pricey) Ford factory o-ring, and that sealed it briefly. But it's started to leak again. My thought is to help the o-ring with...
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