I was on a trip last week and got off I-81 in Virginia to fuel up and the pump at the station read "Bio Diesel" I filled up and proceeded to drive 400 miles before my next fill up and noticed a loss of power and when I filled up I got 4 mpg less than I normally do. after filling up with Pilot which I normally do my power returned and at the next fuel up so did my milage.
My question is this is this normal for Bio Diesel ?