It is an environmentally friendly alternative to regular red diesel.

Performance is also important as previous tests have shown a reduction in fuel economy of around 60% when E95 is compared to regular diesel.

Biodiesel gives off fewer emissions than regular oil-based diesel.

The other 20 will continue using regular diesel and serve as a control group in the five-year test.

The bio-fuel is cleaner than the regular diesel the buses originally ran on making them more environmentally friendly.

Biodiesel can either be combined with regular diesel or used completely by itself.

Marine diesel oil contains some heavy fuel oil, unlike regular diesels.

He declined a $4 million sponsorship from a company that would have required them to use regular diesel.

Probably the most regular diesel locomotive on passenger trains.

Typically, biodiesel fuel costs at least as much as regular diesel.