Ricky  Boby 
2010 Nissan Maxima Sedan 3.5 SV 4dr Sedan (3.5L 6cyl CVT)
2010 Nissan Maxima Engine knocking 
 I bought a 2010 Nissan maxima and every time I fill up the gas tank, the engine start making a knocking noise. But once the tank gets to 3/4 the knocking goes away. I have been putting shell V-Power in my car since the day I got it. 