Thanking you so much @Xulfiqar, yes I have followed the same procedure the reserve pipe was taken off and put into a bottle, car was started then old power steering oil just came out through the reserve pipe and collected in a bottle, very dirty, vehicle was turned off within seconds so as not to allow the power steering pump to run empty for longer. Reserve pipe was attached back and filled with kerosene and vehicle started for two minutes and then again the reserve pipe was taken off and put into the second bottle and vehicle started again and within seconds the kerosene was collected in a bottle attached. Again, reserve pipe was attached and system was filled with new little cheaper power steering oil and vehicle was started again for two minutes and drained the same way.
Then again, this fluid was flushed, reserved pipe removed, put into a new bottle and this fluid was completely taken out by starting the vehicle for few seconds and then poured the new power steering oil.
Those bubbles which appeared with the previous oil change most likely because of mixing of residues of kerosene with new power steering oil disappeared this time and things looked very clean and showed no evidence of left over kerosene or bubbles.
Earlier in morning, once we went to a mechanic for a general tuning, steering was unusually very hard, I did not hear any noise but one had to struggle with it like if you are driving a manual steering.
Mechanic quoted us a mechanical repair for power steering, which according to him could have taken a day. So I decided, that maybe we can try this technique and if it does not fixes then we can go ahead with his advice. Fortunately, this trick worked very well. My friend being completely blank on subject called me later and told me while his drive towards Lahore that how good his power steering feels as compared to earlier. I did not knew what to say, as could not find anything related on internet as to what we did.
