I use this every couple of fill ups.
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I use this http://www.liqui-moly.de/liquimoly/m...30_200_100.jpg when was -27 and no problem exclude fuel filter frozen. (kettle of hot water always help me in this case).
Also I use this additives not bad too.
http://www.liqui-moly.de/liquimoly/m...60_200_100.jpg
Here is a good read.
http://www.fishraider.com.au/Invisio...howtopic=55658
I’ve used flashlube, found I use more fuel. Bottle says I should use less????
Not sure if this topic is specifically mentioned here, but its a good reference site anyway.
http://www.carbibles.com/