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To convert your 1972 Cadillac Eldorado from R-12 to R-134a refrigerant, you'll need to replace the receiver/dryer and possibly the expansion valve or orifice tube, as these components are not compatible with R-134a. Additionally, you'll need to flush the entire A/C system to remove any residual mineral oil and replace it with a compatible ester or POE oil. Finally, install new R-134a fittings and recharge the system with R-134a refrigerant. It's advisable to have this conversion performed by a professional to ensure proper handling and performance.

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2mo ago

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