Use syntec or mobil1 oil on Honda 450 trx?

i use amsoil in my 450.i love it

Amsoil and Mobil are both really good brands. It also depends on what you use the car for. If you like to drive fast? Rev-hard? Drag race? drive in intense heat? Want your engine to last longer? don't want to change your oil as often? then Amsoil is the way to go. the quality of oil is much, much better.then Mobil. but if you're performance minded like me... Amsoil has a large variety of different oils and viscosities.

http://www.synthetic-motor-oilsite.com/1626253/ the site