The Galant generally uses Dexron II/III-compatible automatic transmission fluid or Mitsubishi’s own ATF M-II for traditional automatics, while CVT-equipped models require Mitsubishi CVT fluid. Always verify the exact specification for your model year and transmission type in the owner’s manual or from a Mitsubishi service center.
Understanding the Galant’s transmission options
The Mitsubishi Galant has been offered with several transmission setups across its production history, including traditional automatic transmissions, newer InVECS variants, and, in some markets, a CVT. Fluid requirements depend on the specific transmission installed in your car, so identifying the correct system is essential before purchasing fluid.
Automatic transmissions
Below is a guide to the common automatic-fluid options you’ll encounter in Galants. Use the one specified for your exact year and transmission to avoid shifting issues or damage.
- Dexron II/III-compatible ATF: A long-standing standard for many Mitsubishi automatics, often acceptable in older Galant models and INVECS variants.
- Mitsubishi ATF M-II (and M-III in later applications): Official Mitsubishi fluids that are compatible with several Galant automatics; always confirm whether your transmission calls for M-II/M-III or Dexron II/III based on year and model.
- Dexron VI (where approved): Some later transmissions may list Dexron VI as acceptable, but do not assume compatibility—check your owner’s manual or dealer guidance first.
In practice, the key is matching the fluid to the transmission code printed on the dipstick or in the service manual. Using the incorrect ATF can cause rough shifting or transmission wear.
CVT-equipped Galants
For Galants with a continuously variable transmission, a dedicated CVT fluid is required rather than standard ATF. The exact specification depends on the CVT generation used in your vehicle.
- Mitsubishi CVT Fluid (specific to the CVT generation in your Galant): Use the fluid designated by Mitsubishi for your CVT model, since CVTs rely on a different lubricant formulation than conventional ATFs.
- Third-party fluids meeting Mitsubishi’s CVT spec: In some markets, fluids from compatible brands that meet the Mitsubishi CVT specification may be used if approved by Mitsubishi for your year and CVT type.
Always verify the exact CVT fluid specification for your Galant’s year and market, as using the wrong CVT fluid can lead to reduced performance or damage.
Manual transmissions
For Galants with a manual transmission, the fluid approach differs from automatic and CVT models. Manual gearboxes typically require gear oil rather than ATF, and the specification is usually GL-4 with a weight such as 75W-90 or 80W-90, depending on the year and transmission design.
- Gear oil (GL-4, e.g., 75W-90): Common in many manual-trans Galants; always confirm the exact spec in your manual or with a dealer.
Using the wrong fluid in a manual transmission can cause gear sync issues or wear, so confirm the correct oil type and viscosity for your specific model.
Practical tips for choosing the right fluid
Because Galants span several generations and markets, fluid compatibility can vary widely. Here are practical steps to avoid errors.
First, locate the transmission type code in your vehicle’s documentation or on the transmission itself (often near the dipstick or a service tag). Second, consult the owner’s manual or a Mitsubishi-certified technician for the exact fluid specification for your year and market. Third, if you’re changing fluid after a long interval or a suspected leak, consider having the transmission fluid flushed and replaced by a professional to ensure proper system cleaning and fill level.
Summary
In summary, most automatic Mitsubishi Galants use Dexron II/III-compatible ATF or Mitsubishi ATF M-II, while CVT-equipped models require Mitsubishi CVT fluid specified for the CVT generation in your car. Manual transmissions use GL-4 gear oil (not ATF). Given the range of Galant generations and markets, always verify the exact specification in the owner’s manual or with a Mitsubishi service professional for your exact year and transmission configuration.