2005 Ford Expedition Engine oil keeps going low, but no lea

Tiny
MORALES
  • MEMBER
  • 2005 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 110,000 MILES
I have a 2005 Ford Expedition - Eddie Bauer Edition - 5.4 Liter engine. I have recently noticed that the engine oil keeps going low by about 1 1/2 qts, and they're no leaks to be found. I have searched everywhere! How I noticed the problem was when I drove the vehicle I noticed the lifters sounded very loud. This had never happened before so I thought nothing of it, until it happened all the time. I decided to check the oil level and found it was 1 1/2 qts low. How could this happen? I added the amount that was low and everything seemed fine, but I just recently got another oil change and it has happened again. I have never heard of this happening and I am a long time ford owner. Could it be a defective PCV Valve that allows the oil to pass through? Please help!
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Sunday, June 28th, 2009 AT 9:25 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,922 POSTS
THe PCV wouldn't be the problem, and at 110K, a 5.4L is just breaking in. How many miles do you drive before you lose a quart? Also, check the coolant to make sure there is no oil in the cooling system.

Let me know what you find.

Joe
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Thursday, July 16th, 2009 AT 11:49 PM

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