I did a search on this before, and there's no solid proof that they benefit the fuel economy, much the same as the fuel cat . I was gonna get them, but decided feck it, if I want economy by a diesel.......
They are as usefull as pissing against the wind..........
Same as the fuel cat aload of bollocks :shoot:
If these products could really up the RON ratting of
fuel all Shell would have to do is staple a couple of these
to the inside of their pumps and sell 97Ron or higher .........
....................................but that's never going to happen