The 2017 Subaru Crosstrek uses R-134a refrigerant for its air-conditioning system.
In that model year, Subaru did not switch to the newer R-1234yf; the system relies on R-134a paired with a compatible lubricating oil (typically PAG oil, such as PAG-46). Service should follow Subaru’s specifications and be performed by a trained technician to avoid leaks, improper charging, or environmental harm.
Refrigerant type and lubrication
Here are the core facts about the Crosstrek’s A/C refrigerant and lubrication that owners should know before any service.
- Refrigerant type: R-134a (Tetrafluoroethane)
- Lubricant: PAG oil is used with R-134a; the common specification is PAG-46
- Service notes: Do not mix refrigerants; use equipment and oils compatible with R-134a; follow Subaru service procedures and environmental regulations
Keeping these factors in mind helps ensure proper cooling performance and protects the AC compressor from damage during servicing.
Maintenance considerations for owners
If the Crosstrek’s A/C isn’t cooling properly or you’re planning maintenance, consider the following steps and guidelines.
- Inspect for leaks around hoses, fittings, the condenser, and the compressor connections.
- Have a certified technician evacuate the system and recharge with the correct amount of R-134a and PAG-46 oil per Subaru specifications.
- Perform a system pressure check and leak test after recharging to ensure no refrigerant is escaping.
- Replace the receiver/drier or accumulator if the system was opened or components show signs of moisture or contamination.
Following these steps helps restore cooling performance while complying with environmental and safety requirements.
R-1234yf vs R-134a: context for newer models
Across the industry, some newer vehicles have shifted to R-1234yf due to lower global warming potential, but the 2017 Crosstrek sold in the U.S. region uses R-134a. If you’re dealing with a different market or a later-year Subaru, verify the refrigerant type before service, as configurations can vary by model year and region.
Summary: The 2017 Subaru Crosstrek uses R-134a refrigerant with PAG oil (commonly PAG-46). For any charging, leak repair, or component replacement, rely on trained technicians and Subaru’s service specifications to ensure proper performance and compliance with environmental rules.