It NEVER requires service?

 

Start and go immediatelly.....by the way, I am in Socal and my IS has always been garaged.

 

There is no scheduled service. Only service after performing repairs or other corrective maintenance. There is no preventative maintenance for the automatic transmission.

Purists will insist on doing something, but the utility of this measure is questionable, and it is possible to do more harm than good.

 

I'm surprised that there is no scheduled service requirement for changing the tranny fluid, but I will probably do it anyway. In my experience, transmission fluid is the ONLY fluid that actually gives a significant improvement in my driving experience. It has always made the transmission much quieter and smoother.

 

Yeah, but you can only change such a tiny fraction of the total volume, it's hardly worth the effort. Add to that the heat exchanger is built into the gearbox, so there are no oil lines to interrupt for a full fluid swap, and it just turns into a big headache really fast without much good in the end. Draining the pan and refilling is about it, and you only get 1.37 quarts from that. Capacity is 8.2 quarts from a dry fill, so drain and refill isn't even a 20 percent swap. It isn't hard to imagine their idea of preventive maintenance for this unit is full swap.

BTW, interesting note: the A760E in the IS350 weighs 84.1 kg (185.4 lbs) while the A760H in the IS250 weighs 106.8 kg (235.4 lbs). That isn't intuitively right at all.

 

I though the AT transmission and propulsion system in the IS250 was the same as the IS350? Or did you mean IS250 AWD with the added viscous clutch system?

 

i usually wait a good 3 to 5 mins and dont push so hard for about another 10

 

I would really like to see some of you guys that do extended warm ups also do Blackstone UOAs...

 

When I changed my tranny fluid in my moms Toyota Highlander I changed the fluid 3 times in a 2 month period to get most of the old fluid out. Because when you change it some of the old oil is still in the torque converter, lines, radiator, etc. So changing it 2 more times is ideal.

I have been doing it this method for years. All my auto trannys have lasted past the 200k mark.

I bet you anything that no NEW Generation IS/GS/LS tranny will last past the 200k miles mark if you dont get the tranny fluid changed.

I plan on doing this for my new IS too. I still need to research on how to properly change the tranny fluid on these new gen "dip-stick-less" trannys.

 

It has to be the AWD. They didn't exactly call it out in the table I was looking at. [PAUSE for research]

[/PAUSE]
OK, the IS250 RWD uses the A960E. It weighs 74.7 kg (164.7 lb). That sounds a little better. And no, the RWD IS250 and IS350 use completely different gearboxes. So, it goes like this:

IS350 A760E 84.1 kg (185.4 lb)
IS250 A960E 74.7 kg (164.7 lb)
IS250 AWD A760H 106.8 kg (235.4 lb) - includes transfer case

 

It all makes sense now. Thanks for the info.

 

right now im in northern NY .. and its cold up here i wait abt 10min until the temp needle is in the middle

 

Waiting for the water temperature to raise = waste of gasoline. I live in NY, there's no way why you should wait for the engine to warm up. After you start the car, just wait 20 sec and you should start and go

 

I personally like to start the car and then rev to redline until the temp gauge goes into the normal area, then i just take it easy the first few miles

KIDDING!! I start the car, belt up turn on some music and head out, that would probably be 30 or so seconds idle. I take it easy for the first few miles (usually 5 or so) and thats about it.

 

I fire it up in the morning and let it sit in the garage a few minutes. Maybe 2-5 minutes. Then for the rest of the day I usually only give it 30 seconds. I have noticed even doing that, when I drive down the road to the freeway (which takes 5 minutes of lights), when I ge to the freeway onramp and try to stomp it, the car is still clearly cold and perf suffers greatly. I suspect Toyota does the same thing as Honda where if the engine is cold, VTEC does not kick in at 5K RPM.