Transmission Fluid - Change or Not? (Merged threads)
#466
Instructor
semantics. The diff transmits power to the wheels, if the fluid is old it will make a difference in how much power the wheel with traction will get vs the wheel spinning, given the rear diff is open and we have an "e-lsd", which is integrated with the traction control
#467
#468
Instructor
I had Lexus of Pleasanton, CA change my transmission fluid and had my mechanic do the rear diff, made a huge difference to me , especially if you like to drive "spiritedly". I might have it done again as im at nearly 60k since it was last done.
#469
Lexus Test Driver
The following users liked this post:
Knucklebus (11-02-22)
The following users liked this post:
Knucklebus (11-02-22)
#471
Lexus Test Driver
#474
What did Pleasenton charge for the trans service? Did they say how much fluid they used? Should be less than 3 quarts of WS.
There would be a big difference if they changed the transmission filter (screen), versus a spill and fill.
Thanks in advance!
Last edited by JeffKeryk; 11-03-22 at 06:32 PM.
#475
Instructor
That's a big dealership. I live in Los Gatos. I do my own work but buy parts from Lexus of Stevens Creek; their prices are really good.
What did Pleasenton charge for the trans service? Did they say how much fluid they used? Should be less than 3 quarts of WS.
There would be a big difference if they changed the transmission filter (screen), versus a spill and fill.
Thanks in advance!
What did Pleasenton charge for the trans service? Did they say how much fluid they used? Should be less than 3 quarts of WS.
There would be a big difference if they changed the transmission filter (screen), versus a spill and fill.
Thanks in advance!
If you live in Los Gatos, try Genuine Automotive across from Sutter Health on LG blvd. He has done all the work on my GS since the L-cert warranty expired and I haven't been unhappy once, and I have had A LOT of maintenance done there ( Brakes, tuneups, oil changes, alignment, coolant change with flush, brake fluid, rear diff fluid, install of Diode Dynamics Foglights, etc.)
The following users liked this post:
JeffKeryk (11-04-22)
The following users liked this post:
JeffKeryk (11-04-22)
#477
IIRC it was $400. of course that was pre pandemic prices, so it might be higher. It was a full empty and replace, no flush, I dont remember the total amount they replaced but it was quite a bit.
If you live in Los Gatos, try Genuine Automotive across from Sutter Health on LG blvd. He has done all the work on my GS since the L-cert warranty expired and I haven't been unhappy once, and I have had A LOT of maintenance done there ( Brakes, tuneups, oil changes, alignment, coolant change with flush, brake fluid, rear diff fluid, install of Diode Dynamics Foglights, etc.)
If you live in Los Gatos, try Genuine Automotive across from Sutter Health on LG blvd. He has done all the work on my GS since the L-cert warranty expired and I haven't been unhappy once, and I have had A LOT of maintenance done there ( Brakes, tuneups, oil changes, alignment, coolant change with flush, brake fluid, rear diff fluid, install of Diode Dynamics Foglights, etc.)
The pan drop and filter screen swap can add some pain...
Thanks for your post!
#478
I didnt get a chance to do a transmission fluid change on my Lexus just yet, but, I did a transmission drain and fill on my 2015 Prius this morning that just rolled over 90k miles and, quite frankly, the oil was quite dark, much darker than what the new one looked like. Now, personally, I think that any and every fluid in a vehicle should be changed at a reasonable mileage. I do not thrash my vehicles, red line them, tow with or haul anything with them either, so I think that around 90k is a good mileage to do these sort of fluid changes. Again, that is just my personal thinking, other certainly have different perspective. Since I do majority of the services myself, it does not cost me too much to do the simple drain and fills.
Attached are some of the pictures of the Toyota "Lifetime" Transmission fluid that came out of my Prius and you can see how dark it is. I know, I know, the color of the fluid does not say anything about the effectiveness of any of these fluids, except the brake fluid, but still. Yes, the Prius has CVT and the Lexus has proper transmission (except of course 450h), but still. Also adding a couple of pictures of my sister's 2016 Nissan Rogue that has a CVT and also claims to have a Nissan's "Lifetime" fluid in it, and that one is not in that great of a condition either.
2015 Prius @ 90K miles
2015 Prius @ 90K miles
2015 Prius @ 90K miles
2016 Rogue @ 84K miles
2016 Rogue @ 84K miles
Attached are some of the pictures of the Toyota "Lifetime" Transmission fluid that came out of my Prius and you can see how dark it is. I know, I know, the color of the fluid does not say anything about the effectiveness of any of these fluids, except the brake fluid, but still. Yes, the Prius has CVT and the Lexus has proper transmission (except of course 450h), but still. Also adding a couple of pictures of my sister's 2016 Nissan Rogue that has a CVT and also claims to have a Nissan's "Lifetime" fluid in it, and that one is not in that great of a condition either.
2015 Prius @ 90K miles
2015 Prius @ 90K miles
2015 Prius @ 90K miles
2016 Rogue @ 84K miles
2016 Rogue @ 84K miles
#479
Absolutely correct!
Always find it entertaining when someone starts a thread about the transmission fluid and needing to be changed. Many chime in with oh yes it needs to be changed and nothing last forever. They have ZERO experience on transmissions especially Lexus transmissions. Than there are the conspiracy theorist who state Lexus says do not change the fluid knowing it will fail as soon as it gets out of warranty. If I believed this to be true I would sell my Lexus and never ever own one again.
My local Lexus Service manager who has 25 years experience working on Lexus vehicles and has been trained by Lexus said it never needs to be changed. He went to Detroit where the transmissions are made for training and asked what is the #1 cause of Lexus transmission failing. Their reply was the wrong level of fluid and the wrong fluid. Both of these are factors in one changing the fluid. I will save my money and never change the fluid and listen to the experts. Never changed the transmission fluid and never had one problem.
__________________
Always find it entertaining when someone starts a thread about the transmission fluid and needing to be changed. Many chime in with oh yes it needs to be changed and nothing last forever. They have ZERO experience on transmissions especially Lexus transmissions. Than there are the conspiracy theorist who state Lexus says do not change the fluid knowing it will fail as soon as it gets out of warranty. If I believed this to be true I would sell my Lexus and never ever own one again.
My local Lexus Service manager who has 25 years experience working on Lexus vehicles and has been trained by Lexus said it never needs to be changed. He went to Detroit where the transmissions are made for training and asked what is the #1 cause of Lexus transmission failing. Their reply was the wrong level of fluid and the wrong fluid. Both of these are factors in one changing the fluid. I will save my money and never change the fluid and listen to the experts. Never changed the transmission fluid and never had one problem.
__________________
#480
Pit Crew
Toyota also wouldn't have the fluid available at dealers for sale if they weren't using it.
Why is the fluid not sold on the bottle as "toyota lifetime fluid" lol because it is a wear item.
These 6-spd and 10-spd boxes have all had raving reviews of brand new like shifting after fluid swaps, and 0 failures.
Youtube has quite a few guys knocking it out on video.
You only stand to gain more reliability and new oem shifting.
5 minutes in thermodynamics class would let everyone know why there is no such thing as a lifetime fluid in any machinery from any manufacture to date; in any industry.
Change the fluid.
Edit: It was confirmed Lexus defines lifetime as 100k service miles.
Edit 2: the guy said his guy said the failures come from the wrong fluid level. The fluid level gets low over time because this is a vented transmission. so when you heat the fluid it slowly cooks and vapors out through the trans; just like oil cycles in an engine. This is why this is a service item in the international manual.
Even water isn't a lifetime fluid, its the purest and still has to be refreshed and filtered.
Last edited by gravesg; 12-02-22 at 11:27 AM.