How many K's can u get on a full tank of petrol?

[amant02]

I managed to get 580km on my dc5s, staying below 2500rev/min lol

I get approx the same, I'm aiming to get 600km out of my current tank. done ~400Km today with abit over 1/4 tank left. But i did hit vtec really hard few times this tank.

I also aim to change at 3k RPM for DD.

According to Redbook Max the DC5R can do is 1000km, just wondering how did they drive to get 1000km from 1 tank lol.