That is if he has a corolla if he has a car like Acadia or any gr engines that Toyota or Lexus have then I surely recommend a visit to workshop as he will enjoy a hell of time fixing that top pipe back....
Before buying drive test it then take it and vehicle certification and let then test it then take it to a good workshop and let them check it so you know what's cooking
Plus suspension parts to have seen lower arm give up and the wheel was up under the fender or Axel breaking and which result in wheels come off while driving or reckends or tireends break off the vehicle loose control...these are the people who are drivers of steering they might know to drive but what makes the vehicle run they have no idea....
Engine oil and oil filter coolent spark plugs thermostat oil seals and gaskits if they are leaking and also depends on how much the engine has accumulated kms on it then we can go on look at water pump timing belts pullys and other stuff
Not only tensioner but idler pulley and other pulleys too like alternator compressor water body pully if not run by timing belt of course and vane pump pulley if any of them is seized or making sound
Well you might miss a teeth or two if the cap aims at your face and scald your skin too wherever that high pressure cooked coolent falls so please don't attempt it for your safety and others near you..I've seen it happen at a nearby workshop.
We are a workshop and we use adnoc oil in most of our customers cars unless they specifically ask other brand oil and believe me adnoc engine oil is good oil
See inside stuff you can buy too and much cheaper but who can Deny a an engine built to last a transmission with torque ratio's but of course as with all moter vehicles with proper maintenance...
@javed if the car moves then only it cools could also mean that the condenser fan might not be working or giving full rpms....see this is ac work it has many factors which decide what should be done even changing compressor alone might not save the day if you have dirt in the lines...which will bring you back to square one so you will have to begin again from scratch... I have done automotive engineering... And we provide work with warranty...
I run a automotive workshop here I ajman...I fully understand what both services mean...anyways I wasn't imposing anything just expressing my views as to what would be a nice ride in the desert condition...