Even 2% biodiesel will make a substantial difference in lubricity of low sulfur dino. B100 is even better.
I run my Benz on B100 in the main tank and SVO in the "hot" tank for the warmer months and either SVO or SVO/BD in the hot tank in the cold with dino in the main.
The engine loves the stuff an druns MUCH quieter. When properly adjusted and the linkage tightened up the way it should be there is no drop in power of fuel economy.(of course SVO is free, but brewing Biodiesel costs a bit more)
