There's a new diesel additive called Envirox that uses cerium oxide as a catalyst. That's the same metal that supports more efficient and expensive platinum in catalytic converters. A company spun ...

and proper diesel fuel additives will help with just that. If you want your Volkswagen TDI or Duramax to ferry you into the heat death of the universe, then detergents, lubricants, and stabilizers ...

In addition, diesel additives contain detergents to keep the injectors clean, while some have ingredients to boost the cetane number for smoother idling and easier cold starts. Diesel additives could ...

If you're looking to boost gas mileage, the Hot Shots Secret Everyday ... Unlike some of the other options, this additive is made for just diesel, so make sure you don't put it into your regular gas ...