Hi Ray,
It might have been but wasn’t! Seen references to it on many US sites but the one that I had in mind was the Mechanic in a Bottle which is being distributed in the UK by Rochfords. Had a chat with them yesterday and it seems that the “cure all” product will be freely available Over the counter but the fuel test kit will only be sold as a merchandising package to participating dealers.
B3C Fuel Solutions
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