TSI Supercool mineral oil for R12 A/C compressors 32 oz — SAE 110 cSt (525 VIS) high-viscosity lubricant

This high-viscosity mineral oil is designed to lubricate compressors and internal components in systems originally charged with R12 refrigerant. It meets the SAE viscosity class of 110 cSt at typical test conditions and is marketed as a universal-fit product for equipment that specifies mineral oil for R12. Use only where a compatible mineral oil is recommended by the equipment manufacturer.

How does this oil fit into R12 A/C service work?

TSI Supercool MO-500-GM-32 replaces or replenishes the mineral oil in A/C systems built for R12 refrigerant. It helps maintain lubrication of bearings, pistons and valves in compressors that require mineral-oil formulations rather than polyalkylene glycol (PAG) or POE oils used with newer refrigerants.

• Compatible with compressors and components specified for mineral oil and R12.
• Sold in a 32 oz bottle for top-ups or partial oil changes.
• Viscosity rating of 525 VIS (SAE 110 cSt) for high-load lubrication.
• Universal-fit label indicates broad OEM compatibility where mineral oil is specified.

What do the viscosity numbers mean for performance?

The 525 VIS and SAE 110 cSt values indicate a relatively thick oil at a reference temperature, delivering a robust lubricating film under compression and hot operating conditions. Higher cSt numbers generally mean a thicker lubricant, which can be beneficial for older or high-load compressors; check manufacturer guidance to match viscosity to your system.

• 525 VIS denotes the measured viscosity used by the brand to describe flow characteristics.
• SAE 110 cSt identifies the oil’s class for comparing with other compressor oils.
• Higher viscosity helps maintain film strength at elevated temperatures and pressures.
• Not interchangeable with PAG or POE oils unless the system specifies mineral oil.

How should I use and store this 32 oz bottle safely?

For service, add oil to the system only as directed by the vehicle or equipment service manual; topping off is common, but full compressor oil change procedures may require evacuation and oil measurement. Store the sealed bottle upright in a cool, dry place away from direct sunlight and extreme heat to preserve oil properties.

• Add oil during maintenance following manufacturer-specified quantities.
• Avoid mixing with incompatible oils; flush system if switching oil types.
• Keep spare bottles sealed and stored at moderate temperatures.
• Dispose of used oil and containers according to local environmental regulations.

Who is this for: Technicians and DIYers servicing legacy R12 A/C systems, classic-car restorers, and HVAC professionals who require a high-viscosity mineral oil specified for R12-compatible compressors. Choose TSI Supercool MO-500-GM-32 when the equipment documentation calls for mineral oil of approximately SAE 110 cSt viscosity and you need a 32 oz quantity for topping up or partial oil service. Always verify compatibility with your compressor and follow safety and environmental handling practices.