Rick's Free Auto Repair Advice

Posts Tagged: AC oil

Add AC oil

How much AC oil to add? When replacing AC parts, how much oil should you add? Start with the right AC oil Car and truck AC systems rely on circulating oil to lubricate the compressor. But just like engine oil, not all manufacturers recommend the same viscosity AC oil for their systems. For example, for R-134a refrigerants there are many different viscosities: PAG 46, PAG 100, PAG 150. A Sanden SD7H15 compressor requires SP-15 PAG oil. Sanden SD5H requires SP-20. Sanden compressors used in GM, Honda, and VW models specify … Read More


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