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The 1990 Chevrolet S 10 pickup truck 4.3 liter air-conditioner compressor can hold five pounds of Freon. Most Freon recharge kits will tell you when the Freon is full.

If the system was void of any oil it would probably take 8 to 10 ounces of oil for proper lubrication. If you are only replacing the compressor, add three ounces to the suction port and be sure to turn the compressor by hand several turns clockwise after installation to disperse the oil through the pump.

The refrigerant it takes to fill that system is more like 30 to 36 ounces not 5 pounds.

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11y ago

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