2018 HL tranz. fluid change - Toyota Nation Forum : Toyota Car and Truck Forums
Highlander 3rd Generation (2014-2019) Forum dedicated to the discussion of 3rd generation Toyota Highlanders.

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post #1 of 30 Old 04-19-2019, 06:43 AM Thread Starter
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2018 HL tranz. fluid change

Keep checking You-Tube for a video on changing fluid on an 8 speed. Can't find much on this tranz fluid change. Anyone know of any other sources? Hopefully videos.

Last edited by bodon01; 04-20-2019 at 07:36 AM.
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post #2 of 30 Old 04-21-2019, 07:49 AM
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post #3 of 30 Old 04-21-2019, 09:08 AM
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Quote:
Originally Posted by bodon01 View Post
Keep checking You-Tube for a video on changing fluid on an 8 speed. Can't find much on this tranz fluid change. Anyone know of any other sources? Hopefully videos.


My understanding is the HL has a sealed transmission and doesn’t require regular service intervals (fluid changes).


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post #4 of 30 Old 04-21-2019, 11:09 AM
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Its not sealed.

Service intervals are for the owner to decide. Some maintain their vehicles. Others have their head shoved in a hole in the ground and sing kumbaya to themselves.
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post #5 of 30 Old 04-21-2019, 11:35 AM
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Originally Posted by Greasymechtech View Post
Its not sealed.



Service intervals are for the owner to decide. Some maintain their vehicles. Others have their head shoved in a hole in the ground and sing kumbaya to themselves.


This was what the Toyota service advisor informed me when I inquired about transmission service on my 18’ FWD


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post #6 of 30 Old 04-21-2019, 01:05 PM
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Dealer service advisers are fools. Some tech are too. Toyota corporate customer service is no better.

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post #7 of 30 Old 04-21-2019, 03:29 PM
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I checked the “Highlander 2018 Warranty & Maintenance Guide”
and it only calls for “Inspect automatic transition for signs of leakage” at 90k and 120k.
No other mention.

However, it does mention servicing the “transfer case” and rear diff oil for 4WD only.

I checked the Highlander 2018 owners manual, chapter 7, “Maintenance and Care” and there is no mention of the automatic transmission or a transmission dip stick for checking fluid levels, nor is there an AT dip stick under the hood.


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post #8 of 30 Old 04-21-2019, 07:02 PM
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Quote:
Originally Posted by rseward View Post
I checked the “Highlander 2018 Warranty & Maintenance Guide”
and it only calls for “Inspect automatic transition for signs of leakage” at 90k and 120k.
No other mention.

However, it does mention servicing the “transfer case” and rear diff oil for 4WD only.

I checked the Highlander 2018 owners manual, chapter 7, “Maintenance and Care” and there is no mention of the automatic transmission or a transmission dip stick for checking fluid levels, nor is there an AT dip stick under the hood.


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There is nothing special about the oil or the physics involved in “sealed” transmissions. The oil will wear out. Toyota has a procedure for changing the trans oil, so the fact they dont mention anything in the manual is their way of saying they would be happy to sell you a new highlander when you hit a 150,000 miles. Or a new $6k transmission.
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post #9 of 30 Old 04-21-2019, 07:03 PM
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When Toyota provides a lifetime warranty for the transmission, then I will ignore the fluid changes.

Any and every thing mechanical, like your transmission, is a machine that requires maintenance. Whether you want to do it or not is your choice.

Sorry to sound rude but US consumers have become so dumbed down that its not even funny. Most can not check their tire PSI, use the oil dipstick, pop their hood, or even change a flat tire. Thump your owners manual all you want. When the transmission fails outside of warranty, if you keep the vehicle beyond the car payment or lease, then it becomes your bill, which could've been easily prevented with simple maintenance.

This forum sees numerous transmission complaints. My goal is not to be one of them.
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post #10 of 30 Old 04-21-2019, 08:07 PM
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Quote:
Originally Posted by bodon01 View Post
Keep checking You-Tube for a video on changing fluid on an 8 speed. Can't find much on this tranz fluid change. Anyone know of any other sources? Hopefully videos.


All companies now have “lifetime “ fluid in regular vehicles.
To give you example why that is nonsense.
ZF today is arguably best transmission manufacturer. ZF8 can be found in almost all Audi’s, BMW’s, RR, Bentley, etc. All those manufacturers claim that transmission is sealed and has lifetime fluid (and ZF fluid is fully synthetic, and base stock are not from hydrocracked mineral oil, but Esters, hence price of $27 for quart). But, guess what ZF says about maintenance? Change fluid (NO FLUSH) every 60-75k miles and filter! Release fluid and replace what got out. They have even videos how to do it. So, while your local BMW or Bentley dealer says : no worries, guys who built transmission say: yes, replace it.
Now consider that Toyota uses far less sophisticated fluid.


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post #11 of 30 Old 04-22-2019, 08:38 AM
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The lifetime tranny fluids is a marketing ploy. It's to reduce the appearance of cost of maintenance for the life of the vehicle.


For MOST people who only keep their vehicle 150k miles - it's probably fine. I'm not one of them. My 05 4runner also used the WS fluid with a sealed transmission. Same for my wife's 07 Lexus. And I change the fluid every 50k miles. Cheap insurance.
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post #12 of 30 Old 04-22-2019, 08:42 AM Thread Starter
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No way in the world would I believe in lifetime tranz. fluid. I've done all my vehicles every 40,000 miles.
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post #13 of 30 Old 04-22-2019, 11:55 AM
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Quote:
Originally Posted by MikeInNH View Post
The lifetime tranny fluids is a marketing ploy. It's to reduce the appearance of cost of maintenance for the life of the vehicle.


For MOST people who only keep their vehicle 150k miles - it's probably fine. I'm not one of them. My 05 4runner also used the WS fluid with a sealed transmission. Same for my wife's 07 Lexus. And I change the fluid every 50k miles. Cheap insurance.
So after doing a little research, I'm understanding that you can only change about 2 quarts of the "sealed" AT's 12 quart capacity at a time... So are you doing one 2 qt. fluid change ever 50k or are you doing six 2 qt (12 qt's total) fluid changes every 50K?
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post #14 of 30 Old 04-22-2019, 12:30 PM
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Quote:
Originally Posted by rseward View Post
So after doing a little research, I'm understanding that you can only change about 2 quarts of the "sealed" AT's 12 quart capacity at a time... So are you doing one 2 qt. fluid change ever 50k or are you doing six 2 qt (12 qt's total) fluid changes every 50K?


What is mileage on your car?


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post #15 of 30 Old 04-22-2019, 01:00 PM
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Originally Posted by edycol View Post
What is mileage on your car?


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My wife's 18' HL is still very new (about 10-12K), and won't need this service for a while (I'm assuming), but we plan to drive the vehicle for 8-10 years or more (I'm going on 15 yrs with my truck), so I'll get there eventually. Because the Toyota service adviser has already notified me that the AT doesn't require servicing, I'm assuming they won't service it.
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