Every car/truck I've ever bought I switched to full synthetic oil.
I have had great luck with Ford cars and trucks and believe it is due to taking the best care of them.
So, yes, I use for Full synthetic on my Ranger too.
If in the original thinking in Ford trucks was F-100/F-150 a 1/2 ton
A F-250 was a 3/4 ton
A F-350 was a ton
With the current payload of a Ranger at 1800 lbs.
Would that make a Ranger a
"R-250"?
Just saying.....:)