Every F-150 with the 4.2 V6 l have owned, when l do an OCI and add the required 6 quarts of oil, the dipstick always reads halfway between the full mark and add mark. And l have read posts here and other websites where the owner adds up to 7 quarts of oil to reach the full mark. WHY? Don't said owner know that only 6 quarts are required? Why do they think they're smarter than the Ford engineers?
SMFH!

 

Mine is the same way - 6 quarts puts it in the middle of the crosshatched area.

 

It's the mentality that if it's not completely full, there is something wrong.

I see this a lot with people overfilling coolant.

Or "topping off" their gas tank...

 

My 5.4 is the same. A couple of times I added an extra pint to get it to the full mark on the stick and the engine burned it quickly. At the proper level, it will go 5,000 miles before it's a quart low. Being the **** person I am, I add a pint at 2,500 miles.

 

This cost me $350!
I bought my 07 F-150 new with 6 miles on it. Not every time, but A LOT, I have filled my tank to the top of the fill neck. My sons shop foreman at the Ford dealership he worked at had to keep my truck for 3 days to figure out why my CEL came on. The overflow filter at the gas tank had shriveled up and needed to be replaced. The tech worked on it for 12 hours total testing EVERYTHING to finally find the problem.
DON'T OVERFILL YOUR TANK! On the first click of the gas pump handle STOP!

 

I top it off to the next dollar and haven't had any issues.

 

Way back in 1987 after my wife left, she rented a place that had a steep driveway. Her 81 Granada was parked with the nose down and after the gas tank was filled it overflowed to the charcoal canister saturating it. So when the engine was shut off the pressure would cause the carb to overflow. I'm not a mechanic but doesn't the purge valve open when the engine is shut down on modern cars allowing the vapor from the tank to be absorbed by the canister? The same problem could occur?

 

The filter that was replaced on my F-150 is equivalent to the old type charcoal canister type filters. They're at the fuel tank now.