Well, howdydo, I went and looked in my Ford Factory shop manual for my 2003 Ranger and lordy it does call for Mercon oil. Well, that should make them buggers shift lots better with 10w oil in them. WOW I had no idea they did that. What year did they start using Mercon in manual trannys?
Man, that would have made my old '66 Mustang top loader shift like butter, untill it blew.