Engine Life
Junior User
Joined: Apr 2004
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I have 1999 f250 5.4L supercrew with 225k miles, still running, no oil leaks, I loose about quart of oil every 3k miles which is not bad, I only used Mobil one since I got it, I think it really helped out, only thing engine is tired, it really struggles to accelerate and mpg went down drastically, but it is still running.
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From: La Mesa Ca
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Senior User
Joined: Jul 2004
Posts: 425
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From: Park Ridge, Illinois
My 95 aerostar with the 4.0L engine had 195K when i finally had to trade it in. One of the heads were cracked. Otherwise, it still ran great. I towed a lot with it and made non-stop runs from Chicago to Fla.
I would be shocked if the engine could not do a least 250K with good care, especially by changing the oil regularly.
I would be shocked if the engine could not do a least 250K with good care, especially by changing the oil regularly.
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
better check out a powerstroke if you want that kind of mileage out of it! recent had a 5.4 superduty come into my shop with severe oil consuption with 100,000 on. it burned about a quart per 1000 miles or a bit less. didn't smoke but it had no leaks and the plugs had some nasty deposits on it! i own a 95 powertroke with nearly 190,000 on it and intend on getting 300 out of it. truck needs body work already and i am sure sometime before i hit my mark it will need a trans. but i love my truck and i am a mechanic so no repairs are out of reach.
but don't expect that kind of mileage out of a 5.4 it could happen but it is not the norm.
but don't expect that kind of mileage out of a 5.4 it could happen but it is not the norm.
Posting Guru
Joined: Oct 2003
Posts: 1,332
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From: Baltimore
Originally Posted by NoMo
There's a post currently in the Expedition forum from a guy who has over 308,000 miles on his truck.