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yep... which confirms what I said - it is not a single 120F point, but rather 120-127F range, and that depending on the tranny that range is different. What is good about this method is that it will work even if the ideal temp is not known by the “operator”.
on changing ATF. Basically, new fluid won't hurt anything and removing metals is always a good thing.
Would be interesting to send in an ATF sample from a 100k GS Tranny to see what condition its in.
For the people who change the fluid I hope they keep us updated on this thread and write about their experiences. The only real safe way to do it is a drain and fill and replace exactly how much you drained by draining the fluid in a clear jug or jar or pouring it in a something clear, marking it and putting the same amount of new fluid in either the same jug or jar you put the old stuff in or a identical jug or jar. I am on the fence about doing this but if I see where a couple people did it with no issues I might do one drain and fill just to get some fresh fluid in there to be on the safe side.
Had it done on my Prius (by a Toyota dealer), ES, and GS. Never had a problem.
This is such an important aspect that is ignored. People talk about keeping fresh fluid in there so the seals stay fresh etc...all fine. As someone who did a pan drop service, cleaning the magnets was the most important part of the job - so many people think Lexus say it's sealed...they don't. Only Lexus America say it's sealed -I love for a Japanese person to read the JDM manual.
As the box ages, more metal collects in the fluid.... when it needs a fluid change the box may slip as the debris has worn componentry - without the old gritty fluid, changes can become very poor and it's too late. The posts saying I've done xyz distance without a change and I'm fine make me smile...the greatest logic.
Out of curiosity, do you AWD guys In the northern states have a specified mileage to change the fluid? In Canada, where a majority of GS’s are AWD, they specify to change the fluid every 60,000 miles (100k).
I’ve got 160K miles on my 2013 and I have no issues so far. I have never changed it and I have no plans to change it. I typically have changed it regularly on all other vehicles but I’m actually interested to find out how long this ‘sealed’ trans. will last.
Out of curiosity, do you AWD guys In the northern states have a specified mileage to change the fluid? In Canada, where a majority of GS’s are AWD, they specify to change the fluid every 60,000 miles (100k).
I have a 2014 AWD and the maintenance schedule doesn't specify transmission fluid change at all. One dealer suggested it every 60k miles (along with a host of other fluid changes that Lexus doesn't recommend) - on the dealer website, it comes up as "dealer recommended". I always opt for the manufacturer recommended option for the simple fact that I bought my car CPO and bought the 5 year extended CPO warranty through Lexus. I'm covered through 12/2024 unlimited miles. If my car dies the very next day after warranty ends, I'm honestly okay with that - I would've gotten my money's worth. Bought at ~32k miles in 11/2016 and currently at 128k miles. Over the next 4 years or so, I will probably put on about 40k miles per year, so I should be in the high 200k miles/close to 300k mile range when my warranty expires. The warranty already more than paid for itself
Did a trans fluid flush on 3gs couldn’t find a good forum for my gen so went here had it done for $340 from a Toyota dealer and do not believe any of the bs it will definitely help made my trans much smoother. 100% reccomend at 104k right now.
I changed mine at the stealership, they did for ~300, just a drain and refill. made a HUGE difference in the car, shifts much smoother no flares. I would do that and the rear diff fluid at the same time, worth it.
12-07-20, 01:50 PM
