The deal-spotters over on HotUKdeals have posted this deal about 250ml bottles of Redex being on sale at Tesco petrol stations for 90p.

I went to my local station and bought 3 bottles for 90p each, next to it on the shelf was the diesel stuff at almost £4 a bottle !

Also they were selling Redex lead additive for petrol for 91p per bottle, enough to do 250 litres of fuel.
Dunno how much it normally is, but the stuff we used on our crossflow was much more expensive than that...

[Edited on 25/7/09 by UncleFista]