If I had to compile a list of things that are hard work, awkward and just plain slow me down during my life, I would put topping the DEF tank up on my tractor at work somewhere near the bottom. It is certainly easier that topping the window washer bottle up, it's easier also that cleaning the windows. It far easier than making myself some food after a long day at work.

The problem is that the market leader doesn't use it (yet) and has successfully convinced a load of gullable idiots that it is the most complex, awkward and time consuming task since man made it out of the caves on to the plains of Africa. Next year when the market leader starts using it DEF will be the greatest invention since the dawn of time. Bugle players will bugle a fanfair, bunting will be put in the streets and their DEF will be 16% better than everyone elses. Mark my words.