All I know is I do this for every cold start on my 2018 Raptor that has cam phaser issue, and no more rattle on startup. Eventually, I'll get it taken care of. Not crazy about my truck with 15k miles being torn apart.
I have to agree on the procedure helping, it's delivering oil without the combustion pressures that are added through a regular start. Every race motor I have ever had in my boats had a pre oiling system and they are still available. It`s not like a fresh built motor that has to be primed with a drill turning the distributor gear. If you look at certain Ford diesels there is actually a block off plate on the drivers side of the block to pre prime the engine, here's the link to that. How many put oil in their new filter before installing it on the engine, not just for the O-ring but because the filter is dry and takes a little bit to fill up, that's why the filters have a backflow spring in them to help keep the system loaded with oil.
It man not do a thing for your truck, it`s not going to hurt it either. I just know from being around some engine builders and a $250 oil priming system is cheap insurance on a motor that cost over $30k
I do it to my 18 after it sits overnight or sitting for a while, not every time I start the truck. It would be interesting to hear what Ford Tech One has to say about it.
Just like every engine builder has their own tricks when they build a motor and some do things that other builders say is a waste of time and vice-versa. Somethings that are done are just cheap insurance, maybe it will last longer or run better but in most cases it won`t hurt the motor
Look at the ignition or dash panel on a lot of race cars,boats etc. They will have a start button along with a ignition switch and they will crank their engines over for a few seconds before flipping the ignition switch on allowing it to fire it up. My last Mercruiser marine engine has a timer built into oil primer system that was wired into the ignition switch. It would turn on the pre-oiler for 20-30 seconds before I was able to fire up the motor, it also had a wire going to the engine block temp sensor so if it was above 160 degrees it would fire right up.
I guess to each his own, but if I had a vehicle (My 2018 Raptor) that was prone to certain issues and I didnt want someone to pull the motor apart I'd try to make it last as long as possible