I think the AA took some scientific liberty with the first point to make it 'public friendly' - it's about corrosion, and whilst some people may not be able to define 'inert', they understand that moisture can cause corrosion...ksher wrote:I just copied the info. from AA website.
http://www.theaa.com/motoring_advice/sa ... rogen.html
As for the slightly inaccurate percentage sars - I am always reassured by pedantic engineers