in paiggio its 13 liter to fill it and I used half bottle or little less then half (which is a bit high mixture) but it serves the purpose very good.
there is another STP product which if used along fuel will increase mileage and keep engine healthy but no performance change.
ab rate ka pta nahi tab 300 ya 400 kay as pas thi keemat..
I have been sharing performance change time to time (in very same these forums), infact I think the first time SK talked to me due to he came to know I have put some thing in fuel to enhance power (very old time ago ..) .. but ye porani batain hain ..
people say they got more top speed but in my case I never crosed 115 in normal conditions .
but what difference I did felt is that if for example paiggio takes 15 seconds to hit 100kmh it did that in 10seconds (rough figures) as you can over take any one by just gassing the throttle which is good.
I foreign friend and a biker introduced me to STP and it was a blessing.