FJC branded mineral oil is the recommended lubricant for all R-12 applications. R-12 carries mineral oil with it as it travels through the system, however it does not mix with R-134a or R-1234yf.

For use in R12 Automotive A/C systems

• 525 Viscosity
• A quart of mineral oil for use in R-12 mobile A/C systems or commercial refrigeration systems
• Mineral oil is used in all R-12 mobile A/C systems and many commercial and residential refrigeration and HVAC systems
• Chemically and thermally stable
• Low wax content
• Low pour point
• Made in USA