A/C Lubricants

1. Why are there different types and viscosities of oil, and which should I use?
2. If I put in refrigerant (top off), do I need to add oil too? If so, what type and how much?
3. What kind of oil should I use for a retrofit?

1. Why are there different types and viscosities of oil, and which should I use?

For Retrofitting and top-offs, use Interdynamics products that include Polyol Ester oil. When rebuilding a system that has been opened and flushed, use a pourable PAG oil of the viscosity that is recommended by the compressor manufacturer.

[Back to Top]

2. If I put in refrigerant (top off), do I need to add oil too? If so, what type and how much?

When an A/C system leaks refrigerant, some oil escapes also. Interdynamics’ top off products all have the proper ratio of oil to refrigerant already blended to replace the lost oil.

[Back to Top]

3. What kind of oil should I use for a retrofit?

[same answer as in Retrofit section]

[Back to Top]