Shell 'fuelsave' Diesel

[Cyker]

I just filled me Yaris with it's quad-monthly V-Power shot and noticed that Shell have been touting this new 'fuelsave' petrol and diesel.

Anyone tried it?

Notice any difference?

I'm skeptical of the saving of a litre (For me that'd be virtually unmeasurable anyway), but I'm more interested in all the cleaning agent blurb (Since that is the sole reason I throw some V-Power at the car now and then).

It'd be a damned lot cheaper than the V-Power if it has the same cleaning effect; I'm tempted to try it in the next fillup (If I remember that long! ), 'tho I suspect the difference will be a lot less noticeable. (With V-Power diesel, my Yaris runs noticeably smoother and I get a bit more high-end power, but what I gain I loose in the low end, and the mpg is about 5 or so worse)

It's a pity the Shell diesel here is so expensive compared to the supermarkets or I'd be tempted to try it more long term!

Edit: lol! I just realized this was what alfiejts was referring to in this thread http://www.toyotaownersclub.com/forums/index.php?showtopic=112905&view=findpost&p=1023551