2008 Endeavor. I have been consistently losing engine oil for about 6 months. I have never had an oil spot under my Endeavor at any
location that I park for an extended time but I always seem to be low on oil. My last oil change was about 3 month ago. I added the
required 5 quarts of oil. One month later, I checked the level and added another quart to keep the level on the dipstick in acceptable range.
After the second month, again I added another quart of oil to bring the oil level back up. This makes a total of 7 quarts of oil in 2 months.
After the third month, just a couple of weeks ago, I drained the oil and only got a total of 4.5 quarts. Somewhere I am losing oil but I
don't see where.
Some background info, about 6 months ago I found engine oil in my spark plugs and coil packs when checking out a misfire engine code.
I removed both valve covers and replace both valve cover gaskets along with the tube seals for the spark plug tubes. I also replaced the
back 3 coil packs, since they are difficult to get to, and all 6 spark plugs. A few weeks after the above repairs, I began hearing a ticking
noise from under the hood each morning but only on cold mornings. The ticking noise only lasts for a few minutes before fading away.
I took my Endeavor to a local auto repair shop about 3 miles away, first thing in the morning so that they could hear the noise but it had
stopped time I got to the repair shop. I described the rapid ticking noise and they said that it could be a lifter sticking. They suggested
that I include in my next oil change a quart of Marvel Mystery oil to see if that helps.
I have since changed the oil, as described above, and replaced 1 quart of regular oil with the Mystery Oil. I am still getting the same
ticking noise each morning. I have noticed that the noise gets quieter if I put the truck into gear, either forward or reverse, and will get
louder again if put back into part.
Any ideas on where I might be losing my engine oil and if it could be related to the ticking noise?
All help and suggestions are very much appreciated.