long story short, my ride is better!
got the 2 fan and an AC belt, fuel filter, oil filter, engine oil and coolant replaced, air filter cleaned!
there was a lot of waste in the fuel filter, then checked my fuel tank, fuel station from which i used to get my tank filled gave **** diesel, the diesel in my tank was greyish black.
will get the whole fuel line with injectors done by the end of next month including the change of fuel filter, again.
this may help some one facing a problem like i was!
now my ride is a lot better than what it used to be!
and no more dot-3 on the dry belts just diluted shampoo!