I'm cheap and besides I would have to order GOOD oil.
I use shell rottella 15w40 for summer oil and I haven't had any clutch drag probs. Rotella is suposed to be free of the detergents and additives that are harmful to bikes/clutches.And I can find it easilly on the trail, try finding amsoil in butt **** Saskatchewan, let alone at a little gas station up north ,in butt **** Sask. ;D
Synthetic oils are only bad if they are not designed for wet clutches its the detergents that are added into the oil that helps clean out car motors and keep them running better longer. But in a quad that detergent makes the clutch slip alot worse and causes increased premature wear. Im ordering some Maxum oil full synthetic.