We're currently in a typical chilly spell here in the UK and I've got a bottle of Redex fuel additive sitting in my cupboard, like this one:
I've used it before in my little 2006 Ford Ka 1.3 and it usually perks the engine slightly and seems to give me a longer distance on a full tank.
Is it good or bad for my engine to put this stuff in it during the winter months? Or should I keep hold of the bottle until it warms up a bit?