Parts for your 2006 Nissan Navara-Transmission fluid

2006 Nissan Navara Transmission Fluid

Transmission fluid is absolutely relevant to the 2006 Nissan Navara. Technical documentation backs this up: the D40-series Service Manual (TM section, 2005–2010) specifies Nissan Matic J (later superseded by Matic S) ATF for the 5‑speed RE5R05A automatic, and GL‑4 75W‑85 manual transmission oil for the FS6R31A 6‑speed manual. Nissan Owner’s Manuals and service schedules for these models also call out periodic checks and servicing of transmission fluid under normal and severe-use conditions. So whether it’s an auto or a manual, the 2006 Navara runs a dedicated transmission fluid to keep the gearbox sweet.

For this ute, transmission fluid does a few big jobs. In the auto, ATF lubricates, cools, cleans, and provides hydraulic pressure for shifts. In the manual, the gear oil cushions synchros and gears, reduces wear, and helps shift quality, especially when towing or in hot Aussie and Kiwi conditions.

Servicing advice that keeps a 2006 Navara happy on local roads and worksites:

• Automatic (RE5R05A): Use Nissan Matic J or Matic S ATF (S is the current supersession). A drain-and-fill typically replaces a portion of the total capacity, so expect to repeat or perform a professional exchange if the fluid is badly degraded. Replace the pan gasket and service the filter/strainer where applicable, clean the magnets, and use correct torque on pan bolts.
• Manual (FS6R31A): Use an API GL‑4 75W‑85 (or the Nissan Genuine equivalent). Avoid GL‑5 fluids in the manual transmission unless the spec allows it, as they can be tough on yellow-metal synchros.

Intervals depend on use. While some guides call ATF “filled for life,” local stop‑start, heat, dust, beach work, or towing are “severe service.” A practical approach is:

• Automatic: Inspect every 20,000–30,000 km, change fluid about every 60,000 km under severe service, or up to 90,000–100,000 km if mostly highway and cool running.
• Manual: Change about every 60,000–80,000 km, sooner if shifts get notchy or there’s metallic sparkle in drained oil.

Watch for tell‑tales: delayed or harsh shifts, flare between gears, shudder, whining, or burnt/dark fluid (auto), and notchy engagement or grind (manual). Always confirm exact spec and capacity in the Navara service manual for the VIN and gearbox fitted.

Popular questions about 2006 Nissan Navara transmission fluid

What transmission fluid does a 2006 Navara use?

The 5‑speed auto (RE5R05A) specifies Nissan Matic J ATF, with Matic S approved as the superseding fluid. The 6‑speed manual (FS6R31A) takes an API GL‑4 75W‑85 manual transmission oil. Always match the spec on the vehicle’s build plate and service manual.

How often should the transmission fluid be changed?

For autos, check condition every 20,000–30,000 km and plan a change around 60,000 km in Aussie/Kiwi “severe service,” stretching towards 90,000–100,000 km if usage is light and temps are mild. Manuals typically benefit from fresh oil every 60,000–80,000 km.

Can universal ATF or GL‑5 oil be used?

Best practice is to stick with the Nissan‑specified ATF (Matic J/S) for autos and a GL‑4 75W‑85 for manuals. Many “universal” ATFs don’t meet the shift feel or friction profile required, and GL‑5 can be too aggressive for manual synchros unless specifically approved.