2018 Nissan Rogue A/C Refrigerant and Oil Specifications

Quick Answer

• Refrigerant Type: R-1234yf
• Full System Charge: 17.6 oz (500g)
• PAG Oil Type: PAG 46
• PAG Oil Amount: 4.1 oz (120 mL)
• Low-Side Service Port Location: Near the passenger-side firewall, behind the engine.
• High-Side Service Port Location: Near the front of the engine bay, close to the radiator and condenser.

Why R-1234yf Matters

Starting around 2014, automakers began transitioning from R-134a to the more environmentally friendly R-1234yf refrigerant. Your 2018 Nissan Rogue uses R-1234yf, which has a much lower Global Warming Potential (GWP) than its predecessor. This change was mandated by the EPA to reduce the environmental impact of automotive A/C systems.

However, this new refrigerant comes with a few important considerations:

• Cost: R-1234yf is significantly more expensive than R-134a.
• Specialized Equipment: Servicing an R-1234yf system requires a dedicated recovery and charging machine. Cross-contamination with R-134a can damage the system and the equipment.
• Mild Flammability: While safe for automotive use, R-1234yf is mildly flammable, which is another reason why specific service procedures and equipment are necessary.

Recharge Procedure

A proper A/C service is more than just "topping off" the system. To ensure optimal performance and longevity, the system must be fully evacuated and then recharged with the precise weight of refrigerant.

1. Recovery: The first step is to recover any existing refrigerant from the system using an EPA-approved machine.
2. Evacuation: The system is then placed under a deep vacuum for at least 30-45 minutes. This removes all air and moisture, which can cause poor performance and internal corrosion.
3. Charging: The exact refrigerant charge—17.6 oz (500g) for your Rogue—is weighed and injected into the system. Do not rely on pressure gauge readings to determine the charge, as they can be misleading due to ambient temperature variations.

Common A/C Problems for this Vehicle

While generally reliable, the second-generation Nissan Rogue (2014-2020) can experience a few common A/C issues:

• Compressor Failures: The A/C compressor is the heart of the system. Failures can occur due to internal wear or clutch issues. Symptoms include a noisy compressor or a complete lack of cooling.
• Condenser Damage: Located at the front of the vehicle, the condenser is susceptible to damage from road debris. A punctured or bent condenser will lead to refrigerant leaks and poor cooling.
• Evaporator Leaks: The evaporator, located inside the dashboard, can develop leaks over time. This is often difficult to diagnose, as it may require significant disassembly of the dashboard to access.

When to Call a Pro

Due to the specialized equipment and training required to handle R-1234yf, A/C service is best left to certified professionals. If your Rogue's A/C system is not cooling properly, a qualified technician can accurately diagnose the problem, whether it's a simple leak or a more complex component failure.

Disclaimer: The EPA requires that anyone servicing motor vehicle A/C systems be certified under Section 609 of the Clean Air Act. Always ensure your technician is properly certified.

Find a certified A/C shop on Repairius.