I can't remember how much I bought this fuel injector cleaner for but I think it was in the region of RM10 +/- RM5. This was the first time I used it on the 407 or to be specific after 30,000km. I've got this to say about it: it works, that is, it cleans the fuel injector like it states so and the response is immediate. There are other brands on the shelf that sell fuel injector cleaners, the choice is yours, for cheapskate me and from experience, I've found Waxco to be value-for-money. The liquid was poured into a full tank of petrol well beyond 50 litres and recommends monthly top up . For me, only when I plan to go outstation. If you have some money to spare, give it a try especially if you have never done it before, preferably when the car is well run-in. In my case, car mileage is low but the car is not that old.
