F150 rough idle and stalls at red light?

[ecu1984]

I added a quart of Lucas oil stabilizer (the thick stuff) to my 5.0 Coyote Gen 3
and haven't heard a cam phaser cold start rattle or added a drop of oil to it in a month.
I think the oil is too thin and doesn't leave enough up top when it sits for awhile and drains down.
If the throttle body gets a crusty little lip on it, it won't seat closed properly and will mess with an idle bad.
Eeezy Peezy to take the air intake duct off and spray throttle body cleaner on the "butterfly" while it's running.
I put a little on a rag and gently wipe the edge of the throttle plate and the spot where it seats.
Tell me if I am wrong Kevin, I always learn from your posts