truck is now over 11 years old, and is still running strong with 84,000 miles on it. truck tends to be problematic in the large 5.4 version with cam phasers and broken spark plugs, however the 4.6 does not suffer from these problems. this past winter we have had more snow and more colder days than in decades, and having it sit in below zero weather for 3 days straight, it cranks first start without missing a beat. parts are EXTREMELY cheap being as the 4.6 is the most common fleet vehicle engine, so parts are easily accessible and readily available. the body and frame are extremely durable and after 11 years in the heart of the salt belt, its completely rust free.
I've had Toyota, Nissan, Chevy and Dodge trucks over the years. This is the first Ford truck I've owned. Bought it used with 97K miles. Only owned it for 3 months now, but I believe it's the best built pickup I've ever owned. I do have some concerns however. A tear appeared out of no where in the drivers seat, there is a whizzing/scraping sound coming from the right front (possibly brake issues). And the cam phaser knock that is common for these engines. Also the 4x4 will go into 4HI with no problem, but you have to mess with it to get it to go into 4LO, and then you have to mess with it some more to get it to come back out of 4LO. Have not towed with it yet, but I'm sure it's great at that.
Love my F150. I bought it at 18000 miles and now have 73000 miles on it with no troubles. I pull a horse trailer with it and drive it to work, it is my "everything" vehicle. Other then changing my oil, and brakes, I haven't had to do any repairs of any kind. Tows excellent with my horse trailer which probably reaches up to 5500 ibs. I have towed up steep grades when we go horse camping up in the mountains. Handles excellently. i would definately recommend this vehicle if you want a reliable, tough, and well designed truck. Only downfall is I don't car for where the "oh Sh@#" handles are in the interior. They are placed to far forward.
I have enjoyed my Ford since I purchased it new in 08/05 for the most part. However, I am completely frustrated with Ford's response to my complaints about what obviously is a flaw in the window regulators that were installed in this year and make. I have replaced all 4 regulators/front and rear and Ford has accepted no responsibility. (replaced 2 in 2008, 1 in 2009, and 1 in 2011) After searching the internet for similar complaints it appears the problem with the 2004 Ford F150 Supercrew is wide spread and Ford will do nothing. $2000 in window repairs later, I will now consider a Chevy as my next truck purchase. Ford has let me down by not standing behind their product and manufacturing.
Kept up with all the fluids and filters. There was a recall in early years. Never brought it in for any of the major annual routine checks. I replaced it's first set of tires, brakes, rotors, and axle seals at 90,000 miles, battery at 80,000. Turned 100,000 miles this month. I drive it easy and push it hard. Still runs optimal. Drives good on long hauls and 115+ degree desert heat. Starts up easy under 30 degree tempts too. Handled good when sliding all over the wet/dry roads. The cab is roomy, comfy and quiet. Back window seal has a small crack, bed trim faded quick, and the seals around the cowl cracked and blew away long ago due to desert life. Painted red and still looks good.