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Ford Expedition True expeditions require additional transportation conveyances: horses, boats, cars, for example. With a towing capacity around 9,000 pounds, the Ford Expedition can tow any of these. Ford adds a new top end King Ranch model for 2008, as well as an available rear backup camera and power-retractable running boards. The Expedition is meant for utility, not posing.

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Old 08-23-2008, 10:01 PM   #1 (permalink)
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Default 2004 EB 4x4 Expedition 5.4

My 2004 EB Expedition 5.4 has 83,000 miles. In the morning when I crank it I can hear a rattle (lifters) for just a couple of seconds. I am running a Valvoline synthetic mix. Should I go full synthetic or is there something else I can do to make sure the top part of the motor stays lubricated.Thanks>JP
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Old 08-25-2008, 07:37 AM   #2 (permalink)
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Before your next oil change add a whole can of Seafoam brand treatment to your crankcase. Drive around the block and let the SUV idle for approx 5 minutes. Then drain the old oil out and add a new MOTORCRAFT oil filter & the same Valvoline motor oil you have been using. Hopefully a 5W30 or 10W30 blend?
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Old 08-25-2008, 07:45 PM   #3 (permalink)
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Could be an exhaust manifold leak, or it could be the dreaded piston slap.
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Old 08-26-2008, 09:24 AM   #4 (permalink)
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I knew the 1999-2004 4.8-6.0L GM small blocks had the Cold Start Piston slap noise, but Ford too? I have never heard this before....
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Old 08-26-2008, 08:16 PM   #5 (permalink)
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I think you are right about the filter TBIRD. I have always used Motorcraft products in my Fords and have never had this problem.
This is what I get for letting the local fast lube change my oil. Thanks for the info>JP
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Old 09-13-2008, 04:37 PM   #6 (permalink)
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My 2005 Expelotion 5.4 started rattling lifters at about 50k miles. This happens at start, when hot, and low RPM/high load situations. The dealer said occasionally a lifter or two will just fail to pump up after so many miles, and recommended replacing all of them. I do not know if I want to tackle that job, since over half of the engine is crammed under the windshield.
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