The 10-speed transmission in my 2018 F-150 seems very noisy. Basically, starting out, first gear sounds like it has a lot of gear slop. It rattles. Then, there is a high pitch whine always present when starting out that I suspect only disappears because of road noise. As you slow down, the whine comes back into earshot. The whine is present in all lower gears, but due to wind noise in higher gears with windows down, I'm not sure if it's there in higher gears.
Im trying to figure out engine and tranny noises, and the whine is certainly the transmission. The gear slack sound is, as well... I assume. I say that because this 5.0L burned a quart in the 1,500 miles, and another half in the next 1,000. There is a knocking sound in the engine at idle, but more pronounced when idling next to a wall or car. Certainly, this complete drivetrain is just noisy. Just looking for other 10-speed owners ecperiences. Thanks.

My 2018 5.0 is noisey at idle. I complained twice and was told it's the injection system which is new for the 18's. I'm wondering if an 18 .Mustang engine cover might silence it a little. Put your trans in Sport or Tow and see if the noise is still there. Those modes use a lot of down shifting to slow down...

Im checking it in the morning, but it was still burning... or eating somehow... oil at 5,500 miles. More than a few.
I say eating because something seems wrong. I changed it last week. The next morning, the oil level was at the very bottom of the cross-hatching on the dipstick after the oil change and 8.8 quarts of new oil was put in with the new filter. It took almost a quart to get it back up to the top of the hatching, which is 1/8" from the maximum level.
I don't buy the manual crap stating anywhere between the two holes in the stick is acceptable. When it was down the first time I found it low, it sounded like marbles were in the bottom end. This time, filling it up to "full" is better, but still noisy.
I called the dealer on the discrepancy, but have yet to hear back. I'm sure they're scratching their heads.

Sorry this thread was titled "10-Speed" and I added 5.0L engine issues to the post and it's kind of misguided this thread.

Quick oil update: I changed the oil and checked it the following morning with 8.8 quarts added per the manual. Dipstick level read just above the bottom of the hatching by 1/16". I added almost a quart and went to work. After 800 miles, I rechecked it and it's about 1/16" below the top of the hatching. Had I added a full quart after the change, I suspect the level would have been exactly at the top of the hatching. Problem is, I have 9.8 quarts in the pan to achieve that level, and the manual says 8.8 quarts.
My service manager provided the test procedure, which includes changing the oil, leaving out one quart and running the engine. Then, checking the level and marking the dipstick after the oil rundown period of no less than 10 minutes. Then, you are to add the last quart and run the engine, check the new level after the oil rundown, and mark this level. The two levels are to be in the "normal operating range" on the dipstick, which is between the two punched holes in the dipstick, not necessarily the cross hatching.
The problem is for me, my "one quart low" level would be about 1/2" below the minimum oil level (lowest hole punched) and running it that low could damage the engine.
We decided to check another 5.0L dipstick against mine later this week, and see if maybe my dipstick is wrong. At best, I can't see any foaming if I'm truly running one quart high and my dipstick is wrong, but now, the engine is quieter... less noise in the lower end. It appears that the engine did not burn a quart last time, but the dipstick is wrong???? I know the handle is molded around the stick, but could the dipstick be too far into the handle thus it reads low? Yes, I'm sure the handle is fully seated when checking the oil.
This will be interesting. I'll keep you posted.

Not sure the 5.0L has check valves, but the "check valves" shouldn't be an issue here, as the oil level never increases between readings like one is not releasing oil back to the pan and does later on. I check it after the truck sits overnight, and in theory "all" oil should be in the pan by then. If a check valve hung up on mine, I should show a level about a half inch above the maximum fill hole punched in the dipstick. I never have.
Someone said "you've gotta check it 10 minutes after shutdown because the oil has expanded". A quart of oil does not expand 15% when warm. We put oil in cold - measured as a "quart" exactly like it was measured when It filled the container it came in. It doesn't become 1.15 quarts because it warms up.
I've worked on engines for 40 years and had a small engine business for 12, and we always checked oil levels cold or after a minimum of 15 minutes to allow oil to settle in the pan. I'm sure the 10 minute period in the manual is a minimum, not the time at which we check our oil. It's printed for the guy in a hurry checkingbhis oil when he is fueling at the gas station.
Im trying to get to the dealer to check dipsticks, but so far, it's been one of those weeks. Stay tuned.