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← TechnologyWhich outcome occurs when mineral oil is used in an air conditioning system designed for R-134a refrigerant?
A)Compressor failure due to oil separation✓
B)Increased cooling capacity from enhanced oil solubility
C)Reduced superheat from refrigerant dilution
D)System freeze-up from moisture absorption
💡 Explanation
When mineral oil is used with R-134a, poor miscibility causes oil separation because mineral oil is not soluble in R-134a, leading to inadequate compressor lubrication and eventual failure. Therefore, compressor failure results, rather than increased cooling, reduced superheat, or system freeze-up, which depend on refrigerant and oil miscibility.
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