gsrthomas

iTrader: (1)

Yes there is a Transmission Fluid Filter underneath the pan. If you unbolt the pan you should see the filter.

andoy

Can anyone verify if this holds true for manual trannys?

t0e

iTrader: (1)

I didn't bother reading the entire comment list.

But, I think they will change your differential fluid, and never your tranny fluid.

Gernby

iTrader: (1)

This has been discussed before, and it was decided that there isn't a way to drain / fill more than maybe 20% of the fluid at a time (only the fluid in the pan) since the system is completely sealed.

Joeb427

iTrader: (1)

I would think you can purge all the fluid through the cooler line at the radiator and while pumping in new the fluid into a imput on the trans.I've done it on a '05 Explorer with a no dipstick sealed tranny changing over to Amsoil trans fluid.
Checking of the fluid is done at that imput.You just let the excess drip out and when it really slows or stops..it's full.Now I haven't checked the IS to see if it's the same type set up but there has to be a way to add and/or change all the fluid.Some shops have machines but I don't like the pressure those machines use.
It's a pain in the **** but it can be done.

Gernby

iTrader: (1)

The transmission's cooling system is permenantly sealed too. It isn't like the older designs where the hoses could be disconnected from the heat exhanger to pump fresh fluid through.

gsrthomas

iTrader: (1)

I remember a while back someone posted how to change the WS Fluid from the IS's auto tranny. This was a Lexus Procedure for Lexus Techs.

Can anyone post this again?

Joeb427

iTrader: (1)

Well,if that's the case,then the only thing is do a filter change with a 20% fluid exchange.Maybe just not worth the effort.
If Lexus says it's a no maintenance thing..it will be for me.I am changing the diff fluid to 80w90 Amsoil the end of the month.
Thanks,Gernby

Gernby

iTrader: (1)

Here is another thread about it. Lobuxracer posted some good info there.

https://www.clublexus.com/forums/sho...n+fluid+sealed

Gernby

iTrader: (1)

If you are referring to the info that Lobuxracer posted in the thread above, that was not a procedure for changing the fluid. It was the procedure for filling the transmission after certain repairs.

Koz

Plain and simple the trans doesn't need fluid changes. Check for leaks when you change the motor oil. Don't waste your money and time changing the fluid. You can not use those fancy fluid changing machines unless they are flushed with the WS fluid. The proprietary OEM WS synthetic trans fluid is very expensive and is only sold by the gallon.

Koz

gsrthomas

iTrader: (1)

You can just drop the pan and use to procedure to fill it?

Also, the file name is called "Transmission_fluid_change" not just fill only?

There has to be a proper way to change the fluid. I don't buy that there isnt a way to change it.

Koz

$10 a quart.

Gernby

iTrader: (1)

The problem is that the whole system contains about 8 liters of fluid, and the pan only holds about 1.5 liters. There isn't a way to completely drain the whole thing and refill it. Unless you want to drain 1.5 liters, fill it back up, drive it, drain 1.5 liters again, fill it back up, drive it ... repeat ... repeat ... repeat until you feel that you've changed a significant percentage ... just leave it alone.

HKS350

iTrader: (4)

What about the filter and the metal that will be in the bottom of the pan. I had planned on doing a fluid and filter change b/c of the way I drive. I wouldn't think the filter would be lifetime..?