“Five litre can most economical - refill Millers dosing bottle with tight fitting funnel - gloves essential, squeeze bottle to suck more into lower chamber. £0.87p per shot or £1.74 double shot for 50 litre fuel tank compared with rip-off super diesel average £0.10p per litre meaning £5.00 extra for 50 litre tank. On double shot Millers (added to regular diesel) it starts better, goes better, runs better and after two tanks you'll see at least 2mpg improvement normally more if car not previously run on super or additive. Anecdotally, this is no snake oil!”