A quart of engine oil every 5K ...
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Joined: May 2004
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From: Georgia on my mind...
Originally Posted by kingfish51
That is what the OM states for the 5.4. At 7 quarts, mine hits smack in the middle of the do not add area.
Senior Member
Joined: Dec 2003
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From: Mount Airy,MD
Originally Posted by Quintin
7 puts mine and most every other one I've seen at the top of the fill mark; that's a little higher than I'd like to see, but that's just me. 6-1/2 is about perfect for my truck, puts it on the lower 1/3 of the cross hatches.
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Joined: Aug 2006
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The PCV system on the modular motor's isn't the greatest, one should take everything off down to the intake manifold and inspect; I'll guarentee you that evey modular motor 4.6, 5.4 and even the 6.8 V10 for the Superduties have a decent amount of oil accumulation regardless of how well you can maintain it without actually breaking down and cleaning the oil constantly from all the components. Just inspect your throttle body plates and see for yourself. You can get rid of the PCV and use breathers, except you will need a retune due to the air signature changes in the crankcase, plus the breathers will get oily over time, or you can add a filter inline on the passenger side to cetch the oil.
One quart per 3,000 miles isn't enough to notice any smoke out of the exhaust. There is nothing Ford will do about that. Nothing will happen to the motor, I wouldn't worry about it unless you got a leak big enough for it to drip to the ground, or you notice a cloud of contant smoke while you are driving down the road.
One quart per 3,000 miles isn't enough to notice any smoke out of the exhaust. There is nothing Ford will do about that. Nothing will happen to the motor, I wouldn't worry about it unless you got a leak big enough for it to drip to the ground, or you notice a cloud of contant smoke while you are driving down the road.
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Joined: Jan 2000
Posts: 3,205
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From: Along Lake Erie
As was already mentioned, it's been discussed repeatedly.....
https://www.f150online.com/forums/sho...d.php?t=272090
Direct from the '05 service manual:
https://www.f150online.com/forums/sho...d.php?t=272090
Direct from the '05 service manual:
Excessive Engine Oil Consumption
Nearly all engines consume oil, which is essential for normal lubrication of the cylinder bore walls and pistons and rings. Determining the level of oil consumption may require testing by recording how much oil is being added over a given set of miles.
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, prevent the engine from reaching normal operating temperature. This prevents component clearances from reaching specified operating ranges.
The following diagnostic procedure may be utilized to determine internal oil consumption. Make sure that the concern is related to internal oil consumption, and not external leakage, which also consumes oil. Verify there are no leaks before carrying out the test. Once verified, the rate of internal oil consumption can be tested.
A new engine may require extra oil in the early stages of operation. Internal piston-to-bore clearances and sealing characteristics improve as the engine breaks in. Engines are designed for close tolerances and do not require break-in oils or additives. Use the oil specified in the Owner Guide. Ambient temperatures may determine the oil viscosity specification. Verify that the correct oil is being used for the vehicle in the geographic region in which it is driven.
Nearly all engines consume oil, which is essential for normal lubrication of the cylinder bore walls and pistons and rings. Determining the level of oil consumption may require testing by recording how much oil is being added over a given set of miles.
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, prevent the engine from reaching normal operating temperature. This prevents component clearances from reaching specified operating ranges.
The following diagnostic procedure may be utilized to determine internal oil consumption. Make sure that the concern is related to internal oil consumption, and not external leakage, which also consumes oil. Verify there are no leaks before carrying out the test. Once verified, the rate of internal oil consumption can be tested.
A new engine may require extra oil in the early stages of operation. Internal piston-to-bore clearances and sealing characteristics improve as the engine breaks in. Engines are designed for close tolerances and do not require break-in oils or additives. Use the oil specified in the Owner Guide. Ambient temperatures may determine the oil viscosity specification. Verify that the correct oil is being used for the vehicle in the geographic region in which it is driven.
