2019 Nissan Altima Transmission Fluid, Filter & Service Guide

As an ASE-certified master technician, I regularly field questions regarding Nissan’s continuously variable transmissions (CVTs). For the 2019 Nissan Altima, maintaining the transmission is arguably the most critical aspect of your vehicle's long-term reliability. The 2019 model year kicked off the Altima's sixth generation, introducing updated Jatco CVTs to handle the power of the 2.5L inline-four and the innovative 2.0L VC-Turbo engines.

If you're gearing up to service your 2019 Nissan Altima, here is your comprehensive guide to the transmission fluid specifications, capacities, filters, and procedures you need to know.

Quick Answer: 2019 Nissan Altima Transmission Specs

• Transmission Make/Model: Jatco CVT8 (JF016E for the 2.5L) or Jatco CVT8HT (JF017E for the 2.0L VC-Turbo). Both are branded as Nissan Xtronic CVTs.
• OEM Fluid Spec: Genuine Nissan CVT Fluid NS-3. (Do not use NS-2 or traditional ATF).
• Drain & Fill Capacity: Approximately 4.0 to 5.0 quarts (varies slightly by engine/cooler package).
• Full Overhaul / Dry Capacity: Approximately 8.6 quarts (8.2 liters).
• Filter OEM Part Number: Two filters exist—a metal mesh pan strainer and a paper cartridge filter in the external cooler block. Due to slight variations between the 2.5L and 2.0L turbo transmissions, verify the exact OEM part numbers (typically 31728-xxxxx for the strainer and 31726-xxxxx for the cartridge) with your local Nissan dealer using your VIN.
• Recommended Service Interval: 30,000 miles (severe duty/city driving) to 60,000 miles (normal duty).

Fluid Type Explained

The 2019 Nissan Altima strictly requires Genuine Nissan CVT Fluid NS-3. This is a low-viscosity, highly specialized friction-modified fluid designed specifically for modern Jatco push-belt and chain CVTs.

Unlike traditional automatic transmission fluid (ATF) which is designed to lubricate and allow a certain amount of slip in clutch packs, CVT fluid actually requires a specific coefficient of friction. This friction prevents the internal steel push-belt or chain from slipping against the variable steel pulleys. Using a standard ATF or even an older CVT fluid like Nissan NS-2 will result in incorrect friction levels, leading to severe belt slip, overheating, shuddering, and rapid, catastrophic transmission failure.

While there are aftermarket fluids that claim to be "universal CVT" or NS-3 compatible, many technicians strongly advise sticking exclusively to OEM Nissan NS-3 to ensure proper pulley clamping force and optimal transmission lifespan.

Service Procedure

Servicing the CVT in a 2019 Altima requires more care than a traditional automatic transmission, as fluid levels must be checked at a precise temperature.

Drain and Fill (Recommended)

A standard drain and fill is the safest and most common way to service the CVT.

1. Drain: Raise the vehicle level. Remove the drain plug on the transmission pan and drain the old fluid.
2. Filter Replacement (Optional but recommended): If you are doing a deep service, remove the transmission pan to replace the internal mesh strainer and clean the pan magnets. You should also replace the external paper cartridge filter located inside the cooler housing on the side of the transmission.
3. Fill: Add approximately the same amount of fluid you drained (usually around 4.5 quarts) through the fill tube/charging pipe.
4. Level Check: This is the critical step. Start the engine and cycle through all the gears (P-R-N-D-L), pausing in each. Hook up an OBD2 scan tool to monitor transmission fluid temperature. The fluid must be between 95°F and 113°F (35°C to 45°C). While running at this temperature, remove the overflow check plug on the bottom of the pan. Fluid should trickle out. If it pours out, let it drain until it trickles. If nothing comes out, add fluid until a steady trickle is achieved.

Full Fluid Exchange

We generally do not recommend power-flushing a CVT using high-pressure machines, as this can dislodge debris and lodge it in the sensitive valve body. If you want to replace all 8+ quarts of fluid, the best method is to perform multiple drain-and-fill procedures, driving the vehicle for a few miles in between to circulate the old fluid out of the torque converter and cooler lines.

Service Interval

Nissan's official maintenance schedule often states that the CVT fluid is a "lifetime" fluid under normal conditions, or recommends inspecting it using a scan tool (which measures a "fluid degradation number") every 10,000 miles.

However, real-world experience dictates otherwise.

• Normal Duty: For drivers doing mostly highway driving in temperate climates without heavy loads, plan to replace the CVT fluid every 60,000 miles.
• Severe Duty: If you drive in heavy stop-and-go city traffic, mountainous regions, extremely hot climates, or regularly carry heavy loads, you meet the "severe duty" criteria. In these conditions, heat breaks down the fluid's friction modifiers much faster. You should perform a drain and fill every 30,000 miles.

Common Transmission Problems

The sixth-generation Altima's CVT8 is significantly more reliable than the earlier CVT generations (like those found in the 2007-2012 models), but it still requires meticulous maintenance. Common issues include:

• CVT Shudder / Judder: Often described as a vibration or shaking sensation during light acceleration. This is usually caused by degraded fluid failing to provide the correct friction, leading to belt slip.
• Valve Body Failures: The solenoids in the valve body can become sticky or fail due to contaminated fluid, resulting in sluggish engagement or failure to shift ratios smoothly.
• Overheating: Pushing the transmission hard in hot weather or with degraded fluid can send the transmission into a "limp mode," drastically reducing power to protect the internal components.

The easiest way to prevent these issues is sticking to strict, 30k to 60k-mile fluid replacement intervals.

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