What oil is best? and what ratio?

[sundance]

For bike bike oils- Maxima K2, Motorex Cross Power, Yamaha 2R and Honda Hp2.
OPE oils- Red Armor, Redmax Maxpro/ Husky XP+.
These are ones I have used that I can recommend.
With that said any JASO FD certified oil will work well. And please dont use boat oil!
I would also add Amsoil Dominator as decent based on people I trust. I dislike Amsoil as a company and have little interest in trying it out.

I went through several quarts of Mobil Racing 2T back in the day. Been using Dominator for a while now.

 

[bwalker]

I went through several quarts of Mobil Racing 2T back in the day. Been using Dominator for a while now.

Sadly Mobil MX2T/2R hasn't been available for a long time. It was an exceedingly good oil.
I used a ton of it back in the day. The best part was it only sold for $3.50 a pint!