I'll be going to a mates place tonight, but before I do I'm going to pop by supercheap(open till 9pm on fridays) and grab two bottles of Fuel Doc and try this stuff out according to instructions. First use: After refilling petrol, immediately poor the whole bottle in. After the first use, use the second bottle to measure 25mls and pour that in after each petrol refill, which should last you 11 petrol refills. If this fuel doc does not make a difference I will use the Toyota stuff, as it looks like Adamsy has had good experience from using it. I had 50% fuel in the tank. Went to petrol station poured full bottle inand then topped up the tank with petrol. I felt a bit of difference but it might be Placebo effect?