Question about 2006 Mercury Mountaineer

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Overheating while driving my 2006 mercury mountaineer with 65000 miles on it. The coolant reservoir stays full but the radiator loses coolant but no puddles under the truck

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If you are losing coolant but not leaking out, there are 2 other possibilities. Does it go intop the oilpan? Easy to verify by looking at dipstick. If no, then it is probably getting into the cylinders and going out the exhaust. Is the exhaust particularly moist? Causes for this would be a blown head gasket or cracked head. If you have more questions, please reply.

Posted on Sep 10, 2010

  • Stephanie Nickolson Aug 11, 2013

    Our 2006 Mountaineer just overheated on the highway and broke down. (head gasket??) and oil and coolant covered our back window. This happened 3 weeks after our A/C failed and dealer disconnected our A/C. Could disconnecting the A/C cause this problem?


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