ok fuel prices is 3.95 a gallon.. offroad fuel is 3.65 a gallon.. ok now at a gas station here n town has biofuel its 2.65 a gallon an its 80% road fuel an 20% biofuel.. my question is what exactly is this 20% of bio fuel made of an what do i need to do to run this n my 12 valve also if im out...