GLIDESUL

Well i hope im not going to have problems. Noticed a leak around my tranny pan (gasket). Gonna have to drop it to change the gasket. Dealer wants like 500 bucks to change gasket and fuilds.On top of that my rear bearing are going bad waiting on a qoute for that. Seams like im replacing alot of parts about now. I do the minor work on car. I cant complain there parts that eventually wear. 2002 ls430 123,xxx and climbing.

tsslaporte

Yea that's about right, like the old fluid is keeping everything sealed and the new fluid will give it issues. Thats why you should do it like at least every 50k.

So its like 2-3 quarts to drop the pan and refill, but how about a complete flush? On my car its 11 something quarts 5at, so surly for 6speed AT will be up there.

tsslaporte

^ bump, also what do you guys think about a flush at 73k? Go for it or its too late to change?

Jabberwock

I would go ahead and flush the trans even at greater than 80k. I am a big believer in running with clean oil/fluids in my cars. Take care of your car and it will take care of you is how I think about this.

BNR34

iTrader: (1)

From my very extensive research on this topic, the conclusion was the WS ATF in the "sealed" 6-speed tranny needs to be replace every 100k miles.

I replaced the tranny fluid in my 05' LS430 at 50k miles and plans to do it every 50k. I like my expensive tranny to last a very long time

Like Jim_Chow said, the WS fluid is life time if you don't care if the tranny last more then 100k miles.

BNR34

iTrader: (1)

25k is not excessive at all, actually is just about right for a perfectly maintain tranny.

I just replaced the tranny fluid in our GS300 at 23k miles, and the fluid is getting dark already. It is not pitch black yet, but is not clear anymore.

The main reason the WS fluid in our "sealed" tranny lasting longer is because it is a synthetic fluid. The older tranny that uses non-synthetic fluid require fluid replacement at 30k miles. So 25k is just a hair sooner, not excessive at all.

This is the reason why some car's tranny still shift perfectly smooth at 200k miles and some tranny is dying at 100k miles, regular fluid changes

GeorgeT's tranny is going to last a very long time. His dealer is good!

tsslaporte

^ so changing at 73k should be no issue right? One guy at the lexus dealer was like yea you don't need to change it until 100k, then another guy said no it will start slipping.

Also no one seems to know the amount of fluid needed for the whole tranny. 12 quarts?

StanVanDam

This is for 2004-2006:

Performed Repair // Fill Amount
Radiator removal // 0.7 liters (0.74 US qts, 0.61 Imp. qts)
Transmission hose and pipe removal // 0.6 liters (0.63 US qts, 0.53 Imp. qts)
Output shaft oil seal replacement // 0.4 liters (0.42 US qts, 0.35 Imp. qts)
Transmission pan and drain plug removal // 1.3 liters (1.37 US qts, 1.14 Imp. qts)
Transmission valve body removal // 3.9 liters (4.12 US qts, 3.43 Imp. qts)
Torque converter replacement // 5.3 liters (5.60 US qts, 4.66 Imp. qts)
Entire transmission assembly // 7.2 liters (7.61 US qts, 6.34 Imp. qts)

HINT: If you cannot add the listed amount of fluid, do the following:
(1) Install the refill plug.
(2) Allow the engine to idle with air conditioning OFF.
(3) Move the shift lever through entire gear range to circulate fluid.
(4) Wait for 30 seconds with the engine idling.
(5) Stop the engine.
(6) Remove the refill plug and add fluid.
(7) Reinstall the refill plug.

tsslaporte

Damn that's like 20 quarts for the whole thing?

StanVanDam

No, those are the amounts you fill in depending on the repair that you did.

For example, if you did a complete transmission rebuild, you would fill in 7.2L. If you replaced the torque converter, fill in only 5.3L.

tsslaporte

But if you wanted to flush the Transmission you would need 20.49 quarts to change out all the old fluid no?

StanVanDam

Dry fill: 10.9L
Drain and refill: 3.0L

Nothing in there about a flush, except "ATF-WS does NOT require any flushing or changing during the life of the vehicle."

It also says "Fill the transmission through the refill hole until fluid begins to trickle out of the overflow tube. Reinstall the overflow plug."

tsslaporte

I know what it says, but it should be changed. It would need to get plugged into a machine through the return line. So 10.9 L which is 11.5 Quarts

Thanks

randal

They are not completely draining the tranny each time. Just 2 quarts at each "change". Not excessive.

tsslaporte

I just went to the dealer, they did not want to touch the tranny, They did not want to drain or flush it. The LS430 is at 73k