I have used Mobil 1, Redline and am currently using Amsoil. Only a true idiot would go 25k miles without changing oil, but I have been known to go 5-6500 miles on one change. It is much better looking when used, than is dino oil.
BTW- The reason that synth oil leaks is because it is "searching" and will make it's way out of any space it encounters.

Down side- Cost, especially the good stuff.
Up Side- Hmmm... Maybe extended motor life...


SVT Parts For Sale!PM Me. 2006 M6 Cyclone Gray GTO 1995 Mazda Protege Commuter Special 93 FXDWG Dyna Wide Glide I'm A TROLL Now!~