If you want your Volkswagen TDI or Duramax to ferry you into the heat death of the universe, then detergents, lubricants, and stabilizers will keep your fuel system in check for long life.

DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner treatment for cleaning and preventing corrosion in fuel systems PERFORM AND PROTECT: Fuel additive cleans injectors ...

E-Zoil Offers Complete Diesel Fuel System Cleaner E-Zoil has introduced an all-around diesel fuel system cleaner called Carbon Crusher, an additive designed to clean the entire fuel system.

there really isn't any need to use any of these kind of additives, as the car's electronics and fuel system will be optimised to deliver the best mix of performance and efficiency in the first place.