'85 F150, 300-6, 103K, 1st oil change since purchase:
4 quarts TropArctic 10W-30 SL SemiSynthetic ( $0.99 per quart from long, long ago) + 1 quart MMO I had on the shelf to replace the approximate 5 quarts that came out when I pulled the drain plug and then realized I didn't have any kind of filter wrench and didn't wish to spill oil all over the crown of my driveway...
I'll run it for a K, or so, and then start on my stash of $0.99 10W-30 Havoline DS.
Cheers!
p.s. I'll probably remember to change out the filter, as well.