My mate has been running Biodiesel for some time now but has all of a sudden started running much louder at tick-over. It still idles the same its just much louder. He has inspected his injectors but they seem fine, had his pump checked too. I'm thinking that he may have suffered engine oil dilution as a result of bio passing the piston rings. Does this sound feasible?
He is going to drop the oil tomorrow so we will know soon enough.
Anyone else had similar issues?