The dynamics of demand for used foreign cars indicates the desire of future car owners to have a car with the maximum possible number of options. One of them is the presence of air conditioning. Even if the selected car satisfies the basic requirements of the car enthusiast, but does not have an air conditioner, an application for its additional installation often follows, although it costs $ 1.5 thousand.
At the same time, during the pre-sale preparation, the majority of used foreign cars ("Audi 100", "VW Passat GT", "Opel Omega"), equipped with air conditioning, an unacceptable decrease in compression in individual cylinders is detected during engine control (about 5.5–7.5 atm.). At the same time, the mileage of some cars manufactured in 1994, on which at least one of the cylinders had an unacceptable reduction in compression, was 50–70 thousand km. As a rule, this happened in the last cylinder of the engine, the indirect cause of which was its overheating. This can only be explained by the fact that engines in cars equipped with air conditioning wear out faster due to the rather high load created by them during operation. Systematic overheating leads to premature wear of the piston rings.
lovers "car coolness" it should be remembered that the most dangerous for the engine in hot weather is the mode "idle move". In this mode, the coolant circulates slowly, in addition, the heat exchanger installed under the hood intensively "warms up" engine, taking power from it.
Owners "Audi", equipped with air conditioning, an additional problem may arise due to the need to replace the heat exchanger drive belt every 60 thousand kilometers. This, in general, a simple operation can be performed only with the air conditioner radiator removed, respectively, followed by refilling with freon, which will increase the cost of work several times. Yes, and not every service will take it up.
Undoubtedly, it is good to have air conditioning, but before ordering it, weigh everything carefully "behind" And "against".