can anyone say 'Polariser' ?!
There's lots and lots of stuff claiming to do things like that, but I've never seen any credible data to back it up.
You'd really need engines on a test bed so that conditions are controlled and do back to back multiple tests. I wouldn't believe before and after fuel consumption figures in the real world, far too many variables involved.
Let's just say sceptical until proven otherwise.![]()





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I thought that when I wrote 'polariser' but wasn't game to type it 

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