Hyundai is using Blue Chem Fuel System Cleaner which is a product from Germany and has TUV standard from Germany, Which also has the similiarity of Caltex Concentrate Plus. anyone does comparison of these? Also, there is a local product called VSafe which also claims to clean and save fuels but need to be added every fuel up instead of every 5000km
yup Hyundai is distributing that brand Blue Chem, claimed to have TUV certified etc (wonder how do we verify it?) i used it before, but that time my car still new car (meaning the valves, fuel line probably still very clean), so, no effect felt. the VSafe sounds unconvincing economically.. because need to add every fuel pump. unconvenient also need to add every fuel pump