peterc Posted April 15, 2015 Report Share Posted April 15, 2015 2012 Taurus V6 3.5L with 51K miles, the coolant level in the reservoir is below the "cold" about 1 inch. the level was normal when doing the oil change 6 months ago. so it is likely leaking in last 6 months. The car hood has no coolant smell, no outside leaking found. Dealer did a pressure check and found nothing. Try to get it fixed before 60k warranty over if anything wrong such as water pump and head internal leaking. anyone noticed similar thing? should I be worried? appreciate your feedback, Peter Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted April 15, 2015 Report Share Posted April 15, 2015 Most likely a water pump issue, IMHO, if there are no signs of engine/transmission oil in the coolant or vice versa. Could be a slow leak from the radiator/lines attached to radiator. Could be block porosity also (happens occasionally). An example of this on a Saab: http://www.saabnet.com/tsn/bb/9-3/index.html?bID=137304 1" over 6 months isn't horrible, but definitely worth watching. Fill it back up to COLD FULL and keep an eye on it for a short while. Document frequently. A dye test could also be done, since the pressure test did not reveal anything. Quote Link to comment Share on other sites More sharing options...
akirby Posted April 15, 2015 Report Share Posted April 15, 2015 I answered this over on BOF a few minutes ago. I told him to check the reservoir cap. They may have pressure tested the system but probably not the cap and that could allow evaporation. And it's a lot cheaper to replace than the water pump. 1 Quote Link to comment Share on other sites More sharing options...
fishx65 Posted April 15, 2015 Report Share Posted April 15, 2015 (edited) My 2011 (50,000 miles) has been that low for a long time. I just had them top it off a few weeks ago so I'll keep an eye on it. I have not seen or smelled any leaks which could be good or really really really bad. really really really bad = internal head gasket leak Edited April 15, 2015 by fishx65 1 Quote Link to comment Share on other sites More sharing options...
macbwt Posted April 15, 2015 Report Share Posted April 15, 2015 You could always get an oil analysis done on a sample of oil and they could tell you if you have coolant in your oil. 1 Quote Link to comment Share on other sites More sharing options...
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