Water and diesel fuel don't mix. Although all diesel grades contain a minuscule percentage of water from the refinery, moisture in the diesel tank won't cause problems until the water content ...

If you do crank your engine after adding Diesel Exhaust Fluid to your fuel tank, you likely won't be on the road for very long, as the presence of DEF in your fuel system will almost certainly ...

If your diesel vehicle isn't running properly, try a diesel fuel additive to restore lost performance. See the best diesel fuel additives at AutoGuide.com.