Burning oil
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Senior User
Joined: Apr 2003
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From: Louisville, KY
Burning oil
I am on my first oil change with my new to me 2006 F150. It burned through 1-1.5 qt (5w-20). Is this normal for a 5.4L with 64K on it? What likely is the cause of the oil burning off? What can I do to revolve this?
Senior User
Joined: Jan 2006
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From: eastern nc
Are you sure it is burning oil? After my first oil change, I didn't do it myself, it was done at an oil change shop we have a fleet acct. at. I was on a trip, stopped for gas and like a good boy checked the oil, Surprise!! It was like 1 1/2 quarts low. I topped it off. I wondered if it had not been filled properly as these engines take more than the average. It has never been low, that I could tell, since. 40k on truck.
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Joined: Feb 2003
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I do not know about your 5.4s but mine is a 2004 with 135k--no oil consumption between changes. I change every 3-5K. My crankcase takes 7 qts count them 7 not 5 qts of oil. A lot of shops just provide 5 qts with their standard changes. You have to check it yourself or change it yourself.
Sick 'n Tired
Joined: May 2006
Posts: 2,969
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From: League City, TX
All engines consume at least some oil. It is essential for the proper lubrication of the cylinder bore walls and piston rings. That oil is exposed to combustion and some will burn off. Now, how much is acceptable is a matter of great debate. Ford says in the service manual that depending on driving habits 1 quart every 1500 miles is possible. Customer driving habits greatly influence oil consumption. Mileage accumulated during towing or heavy loading generates extra heat. Frequent short trips, stop-and-go type traffic or extensive idling, and preventing the engine from reaching normal operating temperature will cause increased consumption.
If you're consuming more than a quart every 3000 miles and you don't expose your rig to the above driving conditions look to the following:
Malfunctioning PVC system
Worn piston seals
Worn valve stem seal
Worn valve stem or guide
Worn piston ring groove
Worn piston or cylinder
Of course most of the above could only be diagnosed after an extensive compression and leak test.
If you're consuming more than a quart every 3000 miles and you don't expose your rig to the above driving conditions look to the following:
Malfunctioning PVC system
Worn piston seals
Worn valve stem seal
Worn valve stem or guide
Worn piston ring groove
Worn piston or cylinder
Of course most of the above could only be diagnosed after an extensive compression and leak test.
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