Since we all know some petrol pumps have bad fuel or tempered meters,so i did a little experiment for my cars engine performance and knocking(2010 GLI) i tried by filling from different pumps throughout pindi and isb and found 1 pump which is still under the original companies use PSO pump in F8 MARKAZ through a fathers friend found out about it so went for a refill on almost empty tank the knocking of my car was 90% gone pick had improved far better than before so the milege i got was 14km/liter and when my father went for a refill he did it from another pump (will not mention name or location) the car was back to knocking like hell so on half tank again went to PSO in F8 for a refill (today) the knocking has again gone .I have noticed this from several other pumps in pindi/isb that the car goes KAR KAR KAR every time.
It maybe me but i have noticed this improvement twice for those who have knocking issues plz try a refill from this pump so that i know it is not only me...
MOD: I am not comparing any pumps .