i get the valvoline racing 50 wt for my bsa at auto zone.
i use the rotella t 5/40 synthetic in my kaw voyager and it works great.
been using amsoil 20/50 and have used mobil 1 v twin oil in my speedy. like the amsoil best.
waiting to hear more on the newer valvoline mc oil. just don't know about it being non synthetic.
i guess i could cruise the bob's the oil guy site...
cat
http://www.bobistheoilguy.com/