Towing my truck to another state
 

I am wondering if it’s safe to tow my F150 XLT with 4 whl dr, in a front wheel car carrier?

Look in your owners manual for a feature called "neutral tow", which is designed to allow the truck to be pulled behind an RV (etc) with all 4 wheels on the ground. Even if you have the front wheels up on a car dolly, it should work because the transfer case is in neutral.

Four-wheel Drive Vehicles
You can only tow a four-wheel drive vehicle with all wheels on the ground by
placing the transfer case in its neutral position and engaging the
four-wheel-down towing feature. Perform the steps outlined in the following section
after positioning your vehicle behind the tow vehicle and properly securing them
together.

Note: Make sure you properly secure your vehicle to the tow vehicle.
Four-wheel-down Towing

1. Put the ignition in the on position, but do not start the engine. If your vehicle
has an ignition key, turn the key to on. If your vehicle has intelligent access,
press the engine START/STOP button once without pressing the brake pedal.
2. Press and hold the brake pedal.
3. Rotate the four-wheel drive switch to 2H.
4. Shift the transmission to position N.
5. Rotate the four-wheel drive switch from 2H to 4L and back to 2H five
times within seven seconds. Note: If completed successfully, the
information display shows NEUTRAL TOW LEAVE IN N or NEUTRAL TOW ENABLED
LEAVE TRANSMISSION IN NEUTRAL. This indicates that your vehicle is safe to
tow with all wheels on the ground. Note: If you do not see the message in the
display, you must perform the procedure again from the beginning.
Note: You may hear an audible noise as the transfer case shifts into its neutral position.
This is normal.
6. Leave the transmission in position N and turn the ignition as far as it will go
toward the off position (it will not turn fully off when the transmission is in
position N). If your vehicle has an ignition key, you must leave the key in
the ignition while towing. To lock and unlock your vehicle, use the keyless
entry keypad or extra set of keys. If your vehicle has intelligent access, press the
engine START/STOP button once without pressing the brake pedal. You
do not need to leave your keys in the vehicle. You can lock and unlock your
vehicle as you normally do.
7. Release the brake pedal.

That's a fussy procedure, and one you're not going to remember without the printed instructions in front of you to follow. You have to wonder why Ford didn't just include an N position on the 4WD knob.

Most people never use it, and the last thing I want when the truck is sliding sideways because I had a little less traction then I thought is to drop the transfer case into neutral instead of 4Hi. Having to look it up doesn't seem that bad, and unless I'm missing something, it's basically key on, 2hi, transmission in neutral, then flip the 4wd knob all the way back and forth five times, right?

Although I would guess yes, it does not specifically say that putting it in 'safe for 4 wheel down towing', makes it safe for two wheel towing on a dolly. I hope to buy a class A RV soon and 4 wheel down tow my truck.

Just rent a car trailer. It's what they are designed for.

This may have changed, but as of my last move (2018), none of the major rental companies offer a trailer that will fit an F-150. I elected to buy an enclosed trailer and pull my stuff rather than pulling the truck, but I also didn't have a whole lot of furniture.

Neutral would be at the far end of the sequence, of course, and obviously there are people who have a need to use it. There's no need for the secret handshake to be hidden deep in the 600+ page owner manual. Every 4wd vehicle I've owned prior to my F150s had a transfer case shift lever or switch Neutral position, and accidentally shifting into it was never an issue.

From experience it's worth it to upgrade to the auto transport or whatever U-haul calls their full trailer. Also when you go to reserve it, put your truck as the tow vehicle and something like a Honda Civic as the vehicle being towed. Their system used to kick out trucks and stuff for not fitting or something even though they did.

Edit to add side note about the dollies U-Haul rents:

Capacity

• Max Load: 3,450 lbs. when towing a front-wheel drive vehicle, 3,900 lbs. when towing a rear-wheel drive vehicle.