Labman7 wrote:
Get on any diesel forum and ask.. Bio is a solvent that is better than straight diesel due to its keeps the fuel system clean and adds lube quality to the fuel. Up to 20% bio works in any newer vehicle. Most stations that sell it advertise 5 to 15%. Some midwest states mandate bio blend in all diesel sold in the state. Been around for years now, no issue in a modern diesel. It can reduce mileage a small amount, nothing significant.
I have a friend in SoCal who refine his own bio-diesel by collecting used oil from fast-food restaurants in his town.
It's an older diesel and is not even rated by manufacturer to run on bio-diesel. But he said he goes as high mix as he could defending of his supplies (I'm not sure he went 100%). He said he got cleaner nozzles and injectors and his exhaust is smelling like French fries, lol.