Two series in this engine the later ones are known as PE or performance enhanced have a little more power and of course the 5.4 is stronger than the 4.6. Cam problems means it's a latter engine and the owner didn't use the recommended 5W-20 oil. Spark plug problems were more common in the earlier engines, the PE heads have a little more meat for the plug to stick to. Longevity? the 4.6 in the Crown Vic (a lighter version of the truck motor)- cab operators report it's not uncommon to go 500,000 miles. Gas mileage- I'm running a 01 2WD extended cab 4.6, auto trans, topper full of tools and the 3.55 gear. Last week from Green Bay WI to Superior WI about 16mpg regular no-lead with ethanol running at 70MPH when traffic will allow. From Superior to Peshtigo, same truck, next day on secondary roads (60 MPH) between 18 and 19. Best tank ever about 23 MPG. Normal beating it back and forth to work day in and day out 23 mile commute 15-17MPG. Mileage is down a little from when new but I'm also running 255 tires rather than the 235 it came with, but the speedometer is now accurate.
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Today's Featured Article - On the Road with Dave Gohl: Deere Departed Friend - by Dave Gohl. Have you ever had to part with a dear friend? It's not easy. If it's due to death, your feelings could be in disarray for days, months or even years. Even now after almost 4 years, I still miss my dad. I remember when I was a kid my dad sometimes would tuck my brother and I in at night and we would ask him questions about his childhood on the farm. To this day, it's some of the best stories I've ever heard. And now, I'm so glad that I asked those questions, and if I were a little smarter i
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