I have an 05 6.0 L. When I got my truck I found a paper where Ford Motor stated they only recommend B-5 as a useable biofuel, with the diesel for various reasons. Does anyone know if they changed their stance. I went to a Pilot station yesterday and they only had B-10. I went elsewhere. Any info would be great. Thanks

 

I've used B5 up to B20 in my 02. The higher the percentage the smoother the truck seems to run. I didn't try it until around 155,000 and haven't seen any problems yet. I'm sitting around 220,000 on the odometer now.