You can buy genuine products of Liqui Moly from Mobil House Brandreth Road, Filter House Montgomery Road they have braches in Defence and on thokar Niaz Beg as well 042-37511393, another place is there office on ferozpur road near muslim town more 042-37566360.
I have tried there injector cleaner in my civic 2003 and run about 1000 kms its giving extra smooth drive with much better average However I have to get it refilled to check the exact mileage difference. No problem on CNG and no rpm drop at all.
