Compared to conventional diesel fuel, use of biodiesel is generally found to reduce emissions of hydrocarbons (HC), carbon monoxide (CO), and particulate matter (PM); but to increase oxides of nitrogen (NOx) emissions
Most types of biodiesel from esterified vegetable oils lead to reductions in HC, CO and PM emissions, but lead to a small increase in NOx emissions, with the effects getting stronger with increasing biodiesel strength in the fuel.
I gave up and now drive a very environ"mentally" friendly 4.2 V8 Supercharged 400+hp petrol vehicle instead of running on wvo.....
Range rover L322!