What kind of transmission fluid does a 2001 Lexus gs300 take?

The short answer: it uses Dexron-based automatic transmission fluid, with Dexron II/III as the traditional specification and Dexron VI commonly used as a modern replacement. Always confirm with the owner's manual or a Lexus technician if you’re unsure.

Understanding the transmission and fluid compatibility

For the 2001 GS300, the A340E four-speed automatic transmission was designed to operate with Dexron-type fluids. Dexron II/III was the original specification, and Dexron VI has become a widely accepted, backward-compatible alternative. Using a fluid outside the Dexron family can affect shifting performance and transmission longevity, so sticking to Dexron-compatible fluids is recommended.

Recommended fluids for the 2001 GS300

Here are the commonly accepted options and how they relate to the factory spec:

• Dexron II or Dexron III (GM) ATF — The traditional specification for the A340E in this era.


• Dexron VI — A modern, backward-compatible replacement that is widely used as a substitute when Dexron III is unavailable; should be compatible with the A340E according to general compatibility guidelines.


• Avoid Type-F or fluids not listed for Dexron compatibility, as they can cause improper shifting or transmission damage.

When replacing ATF, follow the manufacturer’s recommended drain-and-fill intervals and ensure the level is correct with the engine warm and the transmission in Park. If you’re unsure, consult a qualified technician or a Lexus dealer.

Practical maintenance steps

Maintenance steps help ensure the transmission fluid remains effective and the A340E stays healthy:

• Check the owner's manual for the exact specification and capacity; typical full-service drain-and-fill quantities range around 9–11 quarts, depending on the method used.


• Use a compatible ATF with the correct viscosity and friction modifiers; if in doubt, request Dexron II/III or Dexron VI compatibility when purchasing.


• Follow a prudent drain-and-fill procedure and avoid aggressive flushing unless the vehicle has a well-documented service history and a professional approves it.

In practice, sticking to Dexron II/III or Dexron VI and avoiding fluids outside the Dexron family remains the standard approach for the 2001 GS300's A340E transmission.

Additional considerations

Some sources mention Toyota/Toyota-approved fluids for various transmissions; however, the A340E in this model is typically Dexron-based. If a dealer or shop suggests a non-Dexron oil, verify its compatibility with your specific transmission history before proceeding.

Summary

For a 2001 Lexus GS300, use Dexron-based automatic transmission fluid. Dexron II/III is the original specification, and Dexron VI is commonly used as a modern replacement. Avoid fluids that are not Dexron-compatible, and consult the owner’s manual or a Lexus technician if you have any questions about compatibility or service history.

What kind of transmission fluid does a Lexus gs300 take?

The correct Lexus GS300 transmission fluid type depends on the model year, but common recommendations are Toyota Type T-IV (for earlier models, around 1998-2005) or Toyota ATF WS (for newer models). Always consult your owner's manual for the most accurate and specific information.
 
This video demonstrates how to change the transmission fluid on a 1998-2005 Lexus GS300: 1mredonKiLausYouTube · Oct 28, 2016
Transmission fluid types by model year 

• For 1998-2005 GS300: Use Toyota Type T-IV or an equivalent like Mobil 3309 or Valvoline Import Multi-Vehicle. 
• For newer models: The required fluid is typically Toyota ATF WS, often found in "sealed" transmissions. Look for this specification in your owner's manual. 
• For multi-vehicle options: Some vehicles can use multi-vehicle fluids, but it is essential to verify that the specific fluid is compatible with your transmission's requirements. 

This video shows how to change the transmission fluid on a newer Lexus with a sealed transmission: 58sS&E's GarageYouTube · Sep 12, 2024
How to confirm

• Check your owner's manual: This is the most reliable way to determine the correct fluid type for your specific vehicle. 
• Look for compatible fluids: If using a multi-vehicle fluid, confirm it meets the specifications listed in your manual (e.g., JWS 3309, ATF WS, etc.). 

This video explains how to add transmission fluid to a sealed Lexus transmission: 19sspeedkar99YouTube · Oct 31, 2016

What kind of transmission fluid does a 2001 Lexus IS300 take?

The correct automatic transmission fluid for a 2001 Lexus IS300 is Toyota Type T-IV (T4). It is crucial to use this specific fluid, as mixing with other types can cause shifting problems. The transmission is the A650E, which requires about 8.58.58.5 quarts for a full fill and approximately 2.52.52.5 quarts for an initial fill, so check your owner's manual for the exact capacity.
 
Key details

• Fluid Type: Toyota Type T-IV (T4) automatic transmission fluid. 
• Transmission Model: A650E. 
• Capacity:
  • Initial Fill: Approximately 2.52.52.5 quarts. 
  • Total Fill: Approximately 8.58.58.5 quarts. 
• Why it's important: Using the correct fluid is essential for smooth operation and preventing damage. Do not mix fluid types. 

Where to find the fluid

• You can find the correct fluid at dealerships or auto parts stores. 
• Look for "Toyota Type T-IV" or equivalent fluids from reputable brands that specify compatibility. Some products might be labeled for use in applications that call for JWS 3309, which is the specification that Type T-IV fluid meets. 

What ATF does Toyota recommend?

ATF T-IV ( Type 4 Automatic Transmission Fluid) for all automatic transmissions which require ATF T, T2, T3 or T4. Do not use this fluid if your manual states your transmission uses Dexron or ATF WS! Designed, tested and approved by Toyota R&D. Special additives protect against corrosion and excessive wear.

What transmission fluid does Lexus use?

Lexus recommends specific transmission fluids for its vehicles, primarily using Toyota Genuine ATF WS for most modern transmissions and Toyota Genuine ATF Type T-IV for older models. Always consult your owner's manual or a Lexus dealer to confirm the exact fluid type required for your specific vehicle, as using the wrong fluid can cause damage. 
Transmission fluid types by model year 

• Toyota Genuine ATF WS: This "World Standard" fluid is used in most newer, sealed Lexus transmissions. 
• Toyota Genuine ATF Type T-IV: This fluid is specified for many older Lexus models. 

Important considerations

• Check your owner's manual: The most accurate information for your vehicle is in the owner's manual. This will specify the correct fluid type, viscosity, and capacity. 
• Avoid mixing fluids: Do not mix different types of transmission fluid, as this can negatively impact performance and potentially damage the transmission. 
• Use the correct procedure: If replacing the fluid yourself, ensure you follow the correct procedure for checking and filling the transmission to the proper level. 
• Consider a professional: If you are unsure about the process or lack the right equipment, it is best to have the service performed at a Lexus dealership to avoid damage.