Optimal blend of bio for lubricity?
 

I'm not going to be able to use soybean B100 any more now that it's getting cold. I do want to retain the cleaning and lubricity benefits if I can though.

What's the optimal percentage of bio to run for those benefits? Can I get it at B10-20? Or do I need a stronger blend? I think I can realistically run up to about B50 for another couple of months. Once the winter really hits (typical temperatures in the low teens) I'm at no more than B20 if that.

Thanks.

From what I've read B2 is all you need for lubricity.

ditto! but I run b-5 in the boston winters