Choosing the best diesel fuel ... remove water from the fuel. Perhaps the biggest hurdle for biodiesel is the availability of feedstocks to produce it. It is typically made from oils and fats ...

Not only did this engine prove vastly more conservative in its fuel consumption compared ... it is recognized as one of the obscure diesel models that made automotive history in their time ...

Mobil NZ has delivered its first shipment of renewable diesel made partly using vegetable oil, but wider commercial and public use is expected to take time as supply and cost demands impede adoption.