Study of amsoil conducted by amsoil showing amsoil is the best? Well... thats kind of obvious. The only conclusion i really come to from that test is dont buy castrol (which is kind of a no brainer)
Anyway, Canadian Tire has it. 15 bucks a liter, approximately. Dont wait for it to go on sale because it wont.
Personally, i like the Rotella stuff, non-synth in my old bikes but the synth would be better if you have a modern bike with a modern clutch pack, or have upgraded your clutch pack in an old bike to a modern synth friendly style. My clutch slips slightly with any synth (amsoil, motul, rotella) so i stick with the regular stuff. The way i justify putting rotella in my bike is by this logic: If its good enough for diesel turbos spinning to 20k RPM, its good enough for my air cooled bike. Plus it has less additives which means its more similar to the oil available when my bikes were built.
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