Should we be adding a diesel fuel additive

I used to use additives such as the Wynns and Mobil products, but I was told to stop by my mechanic because he said that they removed the lubicant in the diesel as well as the muck, so I have stopped using them. It would be good to get the right answer/opinion!!

Im with Karl, a truthful answer would be good!

Ive been running Nulon Diesel Treatment for over 12 months with no ill effects..

when I first put it in, 30 mins after filing up, there was black crap coming out the back for around 1klm then clear ever since.

but for the low sulphur, no idea, look at what happened with BP in Qld!!! Lots o engine rebuilds.

flesh,
from what i know your mechanic is part right. with the new low sulphur fuels, engines that are built prior to the early 90's (from 1994 depending on who you believe) will have problems with fuel seals collapsing. thus injector pumps will need to be overhauled.
basically the sulphur acts as a lubricant and now that all diesel is low sulphur the older engines suffer.
you need to put in a lubricant or rebuild your pump. i use either morey or lucas. but i do know that nulon and a few other brands do the same job. just need to read the bottle to see if it contains a lubricant.
shell has a good bit of info on their website about the new low sulfur diesel. as did bp but i couldnt find it again when i looked.bp also have brochures they can give you at their servos.
when it was first introduced into qld (since 2000)it caused havoc.injector pumps were being rebuilt like no tomorrow.even racv was warning members to be wary of the new low sulphur diesel in qld.
apparently those initial refining problems have been fixed and the fuel companies dont expect any more problems.but they still warn you to service your vehicle if it is an early 1990's model or earlier. in other words, the low sulphur diesel will damage your seals if you have an early 1990.s or earlier engine.
so like i, i would suggest putting in a lubricant and saving up money for an injector pump rebuild.mine is a 1984 troppy.

If you read the stuff on the Shell site, I think we're worrying over nothing. The problems in Queensland in 2000 were caused by the process used to extract the sulphur affecting other components of the fuel, and mainly affected only "pre 1994 2-3 tonne vehicles that used a rotary pump fitted with nitrile seals." Since then the process has been altered and a lubricant added.

Stephen.

My GQ Patrol (1991) developed a slight leak from the pump from the low-sulphur BP diesel. BP came to the party and paid the cost of my pump repair without any quibbles at all.
Most impressed!