lilscrapy8

he actually used 13 quarts since i was watching the machine pumped out all the brown fluid till the red fluid came out, he ran it till that extra quart came out.

Jeff Lange

iTrader: (1)

There are no oil cooler lines on the IS. The only external lines running to/from the automatic transmission on the IS are coolant lines for what Lexus calls the transmission warmer, which has a primary purpose of getting the transmission fluid up to operating temperature as quickly as possible (it also likely serves as a cooler as well, once the fluid is hot).

He may have had something pumping new fluid into the fill port while draining out of the pan. If you did this while running the transmission, it may be possible to get more of it changed, it would still be a hopeful method of trying to get it all though, as you're hoping most of the old fluid will hit the pan and not stay in various places in the transmission.

I'm just speculating on how he perhaps could have pumped fluid into it while running it. It seems to me like letting the transmission run with basically an open leak is probably a bad idea. You'd basically be hoping that there is enough fluid in the pan so the pickup doesn't run dry and cause cavitation in the pump.

Jeff

ISBU

Here is one of the fluid exchanger or flush on the market that repair shop use. http://www.youtube.com/watch?v=FjxmlrbpjTk

Jeff Lange

iTrader: (1)

That system would not work on an IS, as it requires external lines to connect to, which like I said, don't exist on the IS.

Jeff

RocketGuy3

iTrader: (1)

I'm closing in on 5 years and 55K right now, and my transmission shifts as smoothly as I can ever remember it shifting. I certainly don't really notice any problems with it.

ISBU

Are you a Lexus Technician?

Jeff Lange

iTrader: (1)

No, I work at a Toyota dealership.

Jeff

ISBU

I guess you can't do the flush with that machine, I just look at the NCF for the IS and it doesn't have an oil cooler, maybe they are using something else.

JohnLX300

iTrader: (2)

Jeff,

I visited my local toyota dealership, since where I live Lexus is hours away. I asked one of the service advisors about the transmission fluid flush on the IS250. He stated that it is recommended @ 100k. And that they have a new fluid flush machine just for the WS tranny fluid, can you verify any of this?

Thanks

Jeff Lange

iTrader: (1)

There are really only 2 possible ways I can think of that you could maybe flush the fluid with on a 2IS transmission, one way is the method I described above (pump new fluid into the fill port, and let it drain from the pan, hope for the best, I still think this is not a very good idea), or alternatively, and I think some aftermarket shops use a machine that connects to the pickup in the transmission oil pan. If you removed the pan and somehow connected to a pressure port and the pickup, you could potentially cycle the fluid.

That being said, you would want to have a machine dedicated to Toyota WS fluid to do this (if it can be done), as you should never mix WS with any other fluid.

The only SST we have for working with WS is "00002-11100-02 WS Transmision Fill System" which does not allow for flushing, only for adding the fluid to the transmission for fluid level adjustment on models that do not have a fluid level dipstick.

Jeff

Kurtz

iTrader: (1)

Again, where did they connect it?

As noted it's impossible to use a normal tranny flush machine since there's no external connections to the transmission with transmission fluid in them.



Nobody, including folks who are Lexus technicians on here, have ever shown any way it's possible to get more than the ~20% of the fluid out with a simple drain.

Folks who have posted invoices from Canada after getting the "tranny fluid changed" usually showed ~2 liters of new fluid used, which is about what you'd expect from the ~20% fluid drain.... nowhere near 12-13.

ISBU

http://www.equipmentsolutions.com/Fo...b978c9df937837

This machine should be able to do it. It's Toyota/Lexus approved and it has adaptors for the IS.

Jeff Lange

iTrader: (1)

Judging from the information I can decipher from that, it looks to me like they may actually remove the cooler/warmer from the transmission and they've got an adapter that bolts to the transmission at the 2 ports (that normally seal to the cooler with o-rings), and then flushes through those ports.

Sounds reasonable.

Jeff

lilscrapy8

Your right!! one person was on the lift and put my car on "drive" while the other one was at the machine running the flush. They removed the cooler/warmer and attached the adapter to those ports.

Kurtz

iTrader: (1)

ha! that's the exact method Lobuxracer suggested would work like 3 or 4 years ago in the super-long thread on transmission fluid... but of course the machine didn't exist at the time... someone finally invented it

here's the post from him with the diagram showing the heat exchanger "puck"
https://www.clublexus.com/forums/3374778-post60.html


and here is the post where he describes the machine you'd need to invent, that someone finally did-

https://www.clublexus.com/forums/3482248-post71.html



thanks to ISBU for answering a question folks have been asking since at least 07!