Lots of talk out there about Mobil 1. I used to use it in all my vehicles and my Harley until 2002 when I blew the lower end on my 27,000 mile Harley on a road trip. Mobil would do nothig for me even though they had an oil nsample that showed wear. They said it was acceptable.
I did some research and switched to Royal Purple. Their grades 10W40 and over have zinc for anti wear. Since 2002 I've put well over 200,000 miles on my cars and 50,000 miles on another Harley motor with absolutely NO issues.
Check them out. It's pricey but available at NAPA and O'Reilly. They originally started out as a racing oil for drags and stock cars.
