I've been running B5 bio for three months now figuring that it would lube better then ULSD. I have changed the fuel filter once since and once and a while (only two times) on start up it seems to miss and kind of backfire??. The thing is it seems like I've lost power since running it. I have 218K and it's the origanal pump and injectors. I know it could be those things just wearing and it's a fluke that it more noticable with B5. Anyone run bio have the same problems? Sticky injectors?