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Sanden AC Compressor Oil Changing Part 2



      How to measure the oil requirements for AC compressors in AC systems that are less that 56oz and more than 56oz. Vehicles like busses and tractors use systems that can have more than 100oz and heavy duty compressors. The Oil requirements for systems in busses and large vehicles is much more than the oil in the average car due to the extremely long hoses. When filling an AC system in a larger vehicle fill it with the correct amount of oil and then run the system for 10-15 and then check the pressures since the system may need to be charged more once the fluid fills any gaps that may have been empty or air that may have been in the system.


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