What kind of transmission fluid does a 1999 Lexus ls400 take?
The 1999 Lexus LS400 uses Dexron II/III–compatible automatic transmission fluid.
For context, the LS400 from this era relies on a four-speed automatic transmission that is designed to work with fluids meeting the Dexron II or Dexron III specifications. When servicing the transmission, you should select ATF that is explicitly labeled as Dexron II/III compatible or meets those standards. Using a fluid outside these specifications can affect shifting performance and long-term reliability, so always verify the specification on the product label and cross-check with your owner's manual or service guide.
Recommended ATF compatibility
Below are the ATF compatibility options commonly accepted for the 1999 LS400, based on manufacturer guidance and owner-community practice.
- Dexron II or Dexron II-D ATF
- Dexron III or Dexron III-H–type ATF
- Any ATF explicitly labeled as Dexron II/III compatible from reputable brands
Using an ATF that meets Dexron II/III specifications helps maintain smooth shifting and proper lubrication. If you’re unsure about a product, consult the owner’s manual or ask a qualified technician to confirm compatibility before refilling.
Maintenance tips
How often to change the ATF
Transmission service intervals vary by driving conditions, but a common guideline is to inspect or change the ATF every 60,000 miles (about 100,000 km) under normal use. In severe conditions or older vehicles with higher mileage, more frequent checks may be warranted.
What to look for in ATF condition
Check for a bright reddish color and a clean, non-burnt odor in the ATF. If the fluid is dark, has a burnt smell, or you notice shifting glitches, slipping, or delayed engagement, it may indicate the need for a fluid drain and refill, and possibly a filter inspection or further transmission service.
Summary
For a 1999 Lexus LS400, use ATF that meets Dexron II or Dexron III specifications (DEXRON II/III–compatible fluids). Always verify with the owner’s manual or a trusted technician, and adhere to recommended service intervals to maintain smooth shifting and transmission longevity. In case of doubt, consult a dealership or qualified mechanic to confirm the exact fluid specification for your vehicle’s transmission.
What kind of transmission fluid does a 99 LS400 take?
Dexron VI Automatic Transmission Fluid
FRAM – Full Synthetic Dexron VI Automatic Transmission Fluid: 1 Quart (Part No. F426)
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.
What transmission is in the Lexus LS400?
Lexus LS400 A Transmission 90-92 4.0L V8 A341E 4Speed 35010-50010-84 Runs for sale online | eBay.
How much transmission fluid does a LS400 take?
Automatic Transmission Fluid
Capacity: 5 speed A650E Total Fill 8.8 quarts. Capacity: 2 quarts Initial Fill.
