I was on there web site last night looking for the same info, I was able to find that a local Wal-mart has the Amsoil, going to check for sure later today. Check your local Wal-Mart, you might get lucky.
2008 Kawasaki Brute Force 650 SRA
28" Zilla's on ITP SS 106 Wheels
Viper Max 3000 lb winch w/ Amsteal rope
K&N w/ Prefilter, Dynatek CDI, Full Muzzy
Jetted 145F 148R, Polished Slides, Bison Bumpers, Split Audio Tube, MIMB Center 2" Snorkeles, Catch Can Mod.,Tempature gauge
V-Force John Stage 2 Clutch Mod w/EPI Stock primary/Black secondary,
Intake Crossover Mod