A/C Pro

Tips from the Pro

Post: Chart of R-134a oil specs by vehicle make

Please click the here to view the R-134a oil specs. by vehicle make.

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Post: What kind of oil should I use for retrofitting?

Please click the here to view the R-134a oil specs. by vehicle make.

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Post: 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. Our products all have the proper ratio of oil to refrigerant already blended to replace the lost oil.

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Post: Why are there different types and viscosities of oil, and which should I use?

For Retrofitting and top-offs, use 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.

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Post: How do I know if the leak sealer is working?

Your system will leak less refrigerant than it did previously. You cannot find a leak with the UV light that was there previously. Your system continues to blow cold air.

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Post: Are leak sealers safe for my A/C system? What does “System Safe” leak sealer mean?

Yes. IDQ “System Safe” leak sealer is a gentle o-ring conditioner that does not destroy o-rings.

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Post: Will leak sealers seal ANY leak? What size hole will they seal?

They seal small holes that leak less than one can per month.

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