COX=short form of because
lol
UPDATE
spent all day today
got the radiator serviced,
gasket got burnt,got a new one
but engine remain saved n no damage to engine 
timing belt was checked,it was fine
the actual issue was that radiator was blocked thats why it got heat up other than that there's no major issue,thanks to ALLAH 
rest they cleaned spark plugs etc
mobiloil n oil filter will be changed because mechanic said that it also gets burnt
today after all this,when i drove it,i felt that pick is much better now,but i didnt crossed 80 as mobiloil needs to be changed which will be done tomorrow
also i noticed that mileage has increased with new tires(205/60/15 to 195/65/15) as well
n also car has lifted up with new tires :o
cng refilled at reserve from turbela road for 657rs at full pressure since they were filling one car at a time
total mileage was 130km,50 in city rest on motorway n around 10-15km on turbela road with ALOT of speed breakers
anyways average comes out to be 5rs/km 
now condenser service left for tomorrow n the idling speed to be set
and the tire cover sheet (new for 525rs) 
then will get it checked from another guy to check if there's any issue n then again the cng tuning from ENERCON 