![]() This is a known issue with any of the "lifetime" fluids. Another big negative of this fluid is while it is considered "lifetime" fluid, when it starts to shear at the end of it's life it does so quickly. It absorbs moisture and cannot be used in older models without chancing transmission damage (not backwards compatible). WS transmission fluid is not the end all do all for modern Toyota transmissions. In fact the Mobil 1 Synthetic ATF is an outstanding transmission fluid I have used in both my Beta and KTM transmissions in the cold water months. I personally use Vavoline Max life and Mobil 1 ATF since the mid 90's no issues at all. That being said, WS is an outstanding quality fluid as long as it is changed out before the end of it's serviceable life. I just listed the more common ones that all of us are familiar with. OTOH, many other transmission fluids are perfectly fine to mix in WS such as Vavoline Max Life, Toyota T-IV, Ravenol T-WS, Idemitsu TLS-IV, Pentosin ATF44, Motul Multi ATF VI, and many others. ![]() World Standard WS Toyota genuine transmission fluid should only be used and can be bought from the Toyota or Lexus dealership.Click to expand.WS transmission fluid is not the end all do all for modern Toyota transmissions. Flushing the transmission fluid is not recommended for a vehicle that does not have transmission problems, even if the fluid has never been changed, and should only be used as a last resort before rebuilding the transmission. Since this procedure only changes 2.5 quarts of the 12 quarts of total system fluid, its a good idea to perform this procedure 3-4 times with a few hundred kilometers of driving in between, to dilute the old fluid with fresh fluid.įlushing the transmission through the cooler lines is not possible on this transmission type, since the transmission does not have separate lines running to the radiator. You can now enjoy smoother shifts, and peace of mind that your tranny will last much longer now that you've changed out the worn fluid. Now that the transmission fluid has been changed, take the vehicle for a test drive and make sure all the gears shift smoothly. You can also use Toyota's own techstream software paired with a MVCI cable to determine ATF fluid temperature. When the P and D lights are both lit green, the fluid is at the optimal temperature for checking its level. When the transmission fluid gets old, you might have trouble shifting, or your car may get sluggish or stall at stoplights. This will put it in fluid temperature detection mode. Transmission fluid needs to be changed from time to time in order to extend the life of the transmission, usually every 30,00060,000 miles (48,00097,000 km) (sometimes more check your owner's manual for service intervals). Then put it back into D and oscillate quickly between N and D for at least 6 seconds. Shift the transmission into S, go from first to sixth gear, then back to P. Turn the vehicle on, this will put it in diagnostic mode, with a higher than normal idle, and lots of scary lights flashing on the dashboard. To measure the transmission fluid without expensive scan tools, short pins 4 and 13 on the OBDII port under the dash. Excess fluid will flow through the straw and drain once you remove the bolt. Above the overflow bolt is a straw which determines the level of the fluid when the temperature is correct. Instead of a dipstick, sealed transmissions have an overflow bolt that's removed when the transmission is at a specific temperature, in this case, 104F. Its also a good idea to drop the pan and replace the filter, here's a write-up on that: Here's a full DIY Write-up on the fluid change procedure for reference: This procedure is similar to recent models Lexus and Toyota FWD and AWD models, with the exception that the transmission is mounted transversely, including the Lexus ES350, RX350, Toyota Avalon, Camry, Highlander, Sienna and Venza. This procedure is the same for most recent model Toyota and Lexus RWD and 4WD vehicles, including Lexus IS250, IS350, GS350, LS460, GX460, Toyota 4Runner, Tacoma, Tundra and Sequoia. However, transmission fluid does wear out overtime, and if you want to prolong the life of your transmission, its a good idea to change the fluid frequently. Toyota claims the transmission in its modern cars is a sealed unit, and the fluid inside is good for the lifetime of the vehicle. Some cars also have an onboard computer that tracks the fluid life of the car, making it easier to figure out when the transmission fluid needs to be changed. Here's how to change the automatic transmission fluid in a Toyota or Lexus with no dipstick.
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