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Old 02-10-2018, 04:31 AM
 
8,108 posts, read 8,797,479 times
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A revival post from year 2011.

There are many posts about automatic transmissions.

Some agree to change the fluid regularly whilst others state to never change the automatic transmission fluid.
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Old 02-10-2018, 03:26 PM
 
Location: Raleigh, NC
2,989 posts, read 2,354,958 times
Reputation: 3399
I have a 2014 ES350 that already has 71k miles on it. I drive a lot and it's mostly highway, but of course there are always braking and acceleration leading to gear changes. It supposedly has the lifetime fluid and "no transmission fluid is necessary unless towing." It's that Toyota WS-ATF.

So coming from Honda/Acura which requires transmission fluid changes every 30k, I am used to changing the fluid. I've asked 3 Lexus dealerships in the area and requested to change the fluid, and 1 Toyota dealership. They actually said NO and refused. So they pretty much refused a $200+ service or what prices they are charging these days for that. Guess I will ask again when I reach 100k miles and try again. Otherwise this will be a test on how the ES350 handles no fluid changes. I expect to keep this car to at least 200k.

On the other hand, my father-in-law has a 2007 ES350 with no transmission fluid change and it's at 198k miles with no issues. (He could care less about maintenance which is why he got a Lexus).
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Old 02-10-2018, 03:33 PM
 
4,965 posts, read 3,064,824 times
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I think a well built transmission is a lifetime part for most drivers - possibly excepting taxi drivers. A old Taxi driver told me he got at avg 250K out of Tarurs transmissions and 300 + out of Camry ones - this was 20 + years ago.

The ones needing rebuilds at 80 or 90 or 110 or even 120 are just not well designed/built.
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Old 02-10-2018, 04:09 PM
 
3,665 posts, read 2,514,615 times
Reputation: 4034
Why not every year, along with steering ,brake,and antifreeze? Best insurance,only a little extra $$$.
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Old 02-10-2018, 05:00 PM
 
23,338 posts, read 15,265,267 times
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It just stirs junk up when ya change it. So many trans go bad as soon as it is changed.
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Old 02-10-2018, 05:42 PM
 
Location: Floribama
18,440 posts, read 38,546,892 times
Reputation: 17890
Quote:
Originally Posted by HouseBuilder328 View Post
I have a 2014 ES350 that already has 71k miles on it. I drive a lot and it's mostly highway, but of course there are always braking and acceleration leading to gear changes. It supposedly has the lifetime fluid and "no transmission fluid is necessary unless towing." It's that Toyota WS-ATF.

So coming from Honda/Acura which requires transmission fluid changes every 30k, I am used to changing the fluid. I've asked 3 Lexus dealerships in the area and requested to change the fluid, and 1 Toyota dealership. They actually said NO and refused. So they pretty much refused a $200+ service or what prices they are charging these days for that. Guess I will ask again when I reach 100k miles and try again. Otherwise this will be a test on how the ES350 handles no fluid changes. I expect to keep this car to at least 200k.

On the other hand, my father-in-law has a 2007 ES350 with no transmission fluid change and it's at 198k miles with no issues. (He could care less about maintenance which is why he got a Lexus).
The Toyota WS fluid in my Tundra was shot at 100k miles, which lead to shuddering. I replaced it all with Maxlife full synthetic atf and every bit of the shuddering is gone.
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Old 02-10-2018, 06:33 PM
 
4,671 posts, read 5,229,651 times
Reputation: 3912
Quote:
Originally Posted by HouseBuilder328 View Post
I have a 2014 ES350 that already has 71k miles on it. I drive a lot and it's mostly highway, but of course there are always braking and acceleration leading to gear changes. It supposedly has the lifetime fluid and "no transmission fluid is necessary unless towing." It's that Toyota WS-ATF.

So coming from Honda/Acura which requires transmission fluid changes every 30k, I am used to changing the fluid. I've asked 3 Lexus dealerships in the area and requested to change the fluid, and 1 Toyota dealership. They actually said NO and refused. So they pretty much refused a $200+ service or what prices they are charging these days for that. Guess I will ask again when I reach 100k miles and try again. Otherwise this will be a test on how the ES350 handles no fluid changes. I expect to keep this car to at least 200k.

On the other hand, my father-in-law has a 2007 ES350 with no transmission fluid change and it's at 198k miles with no issues. (He could care less about maintenance which is why he got a Lexus).
I would do it at 55K miles, right before the powertrain warranty expires, so you have atleast a couple of months to get a feel for it after they changed it.
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Old 02-10-2018, 06:35 PM
 
4,671 posts, read 5,229,651 times
Reputation: 3912
No amount of Fluid changes can save a poor designed transmission. Look at all the Nissan CVT failures in the Pathfinder and Qx60's or the Ford Focus DCT's.
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Old 02-10-2018, 07:06 PM
 
Location: Newport News Virginia
430 posts, read 1,135,549 times
Reputation: 188
No, NOT regularly changing transmission fluid will cause premature failure. Old worn out fluid is thinner, at operating temperature it will "shear" meaning instead of gap of oil between all of your plates or gears, you have metal on metal contact which creates accelerated wear.

ALSO flushing EVERY transmission fluid change or flushing on a transmission that's never been flushed will ruin your transmission, why?
Because you're flushing out the suspended clutch material that's needed to engage your gears.

IMO the ONLY time you flush is if the transmission is when it's contaminated, which usually happen when coolant enters the transmission via a hole in the transmission cooler/heat exchanger, which happens to be inside the radiator (either on the sides or bottom).

The transmission out of my 300SDL was OLD and Dark, a very blackish red, the transmission shifted a lot better after the fluid change, no more flaring.
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Old 02-10-2018, 07:40 PM
 
Location: Raleigh, NC
2,989 posts, read 2,354,958 times
Reputation: 3399
Quote:
Originally Posted by SAAN View Post
I would do it at 55K miles, right before the powertrain warranty expires, so you have atleast a couple of months to get a feel for it after they changed it.
I had the same idea, but that's my point. I couldn't anyone to do it. I started asking Lexus and Toyota dealers before I reached 60k miles for this service. No one wanted to change the fluid and kept stating, "You don't need to change the transmission fluid -it will only cause more problems."
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