Gasoline engines and diesel engines are very different beasts. I would never put any fuel additive designed for a gas engine into a diesel engine. The needs of these engines are very different - don't press your luck. If you opt to use an additive, buy one made for modern diesel engines (ULSD compatible). All of the companies named above make good diesel fuel additives. Do some reading in the fuel and lubrication forum.
Have Fun!
Don