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I'm looking at a '10 F150XLT loaded with 65k and I wonder if anybody here has any gas mileage figures. It list 15 - 20 and I can live with that but some folk around here have said 12 or less and I can't live with that. Listed as V8 4.6L, anybody got one ?
Just driving it, it should see around 14 - 15. Load it down, or pull something, it will go way down. Ive heard one guy say his goes down to 9 - 10 pulling his boat, but he has a big boat.
I had a '10 150 regular cab XL trim two wheel drive with the 4.6. I could get 18-19 mpg on the highway driving the speed limit. I also had a cab high topper on it which may have influenced mpg's. Sometimes I wish I had it back. New Ford trucks are so complicated and EXPENSIVE these days.
Update: I took a 30 mile ride on the highway today. Reset gas mileage computer- ran 75 mph and it hovered at 21.1 for the 30 mile highway part. Got off, hit a few lights and less than 5 miles later the average was already down to 18.6. I suspect my earlier guesstimate was after I had gotten off the highway and looked at the average by the time I got home.
I got out of a 4.6 Supercrew about 9 months ago. You'll find the best hiway mileage at 65 mph where mine would give me 25+ in the Texas hill country. City driving was 17-19. The 4.6 is a very able engine but it's far from being any powerhouse. To compare, the new truck is a Supercrew and sports the smallest engine available, a 3.7 V6 making 300HP. It will blow the doors off of a 4.6 and a 5.4 stock won't stay with it. It's not a tire burner as it has to build a few RPMs before taking off but once rolling, it's hard to catch. The EcoBust only has 65 more HP. My mileage is 25-27 hiway and about 19 town.
I looked up the specs on a 2010. There was an overlap of 4.6 engines that year. If the engine is a 2 valve, it has 248 HP. If it's the 3 Valve engine, it sports 292 HP. Mine was a 2V. I would strongly suggest avoiding the 3 valve engine of any configuration. The issue is with the cam phasers. They were a known problem with the Triton engines. Cost to fix is about $1500 per side. If the truck you are looking at has a diesel sound to it at idle, it already has cam phaser problems. In some of the engines, the oil journals were a problem which lead to cam phaser failure- the fix- replace the entire engine. Ford replaced thousands of the 5.4 and 4.6 3 valve engines. I wouldn't have a Triton 3 valve even for free. I don't need the headaches that come with it.
I looked up the specs on a 2010. There was an overlap of 4.6 engines that year. If the engine is a 2 valve, it has 248 HP. If it's the 3 Valve engine, it sports 292 HP. Mine was a 2V. I would strongly suggest avoiding the 3 valve engine of any configuration. The issue is with the cam phasers. They were a known problem with the Triton engines. Cost to fix is about $1500 per side. If the truck you are looking at has a diesel sound to it at idle, it already has cam phaser problems. In some of the engines, the oil journals were a problem which lead to cam phaser failure- the fix- replace the entire engine. Ford replaced thousands of the 5.4 and 4.6 3 valve engines. I wouldn't have a Triton 3 valve even for free. I don't need the headaches that come with it.
Yeah, this. My '08 got about the same mileage you mentioned for a 4.6 as well. Definitely a porky truck, although reliable drivetrain.
Being an XLT the OP is looking at, I bet it's the 24-valve Triton. If the cam phasers were even the root cause of those problems in those Tritons, that's one thing. It's low oil pressure thanks to a domino effect from leaking timing chain tensioner gaskets that sets things in motion and you'll need a new engine if you're the typical owner who starts to enjoy that diesel sound and slacks on repairs. So, OP, don't even bother. If you're the adventurous type and/or have proof that the engine is new or rebuilt with updated parts (steel timing chain tensioners, et al), then it may be worthwhile. I myself wouldn't bet on it, though.
When I worked close to home, my 06 F150 5.4L would routinely get 12mpg. When I changed jobs and began driving further to work I would typically see 16-16.5 mpg. On the highway at 70 mph I would see 18 - 18.5. I think it depends a lot on where you drive and how you drive. While the 5.4 is known to have cam phaser issues not all have had them. One way to avoid it is to install a cam phaser lockout kit (a few hundred dollars) and religiously change your oil. It can prolong engine longevity and give you a very reliable engine. I've driven vehicles with the 5.4 for hundreds of thousands of miles with no replacements or major issues.
Really appreciate all this owner based input, truck is still on the lot. I'm not used to hearing about motor issues on a ford truck, now the trans has been 'funny' on all my fords it seems.
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