Fluid Replacement
Nope! 
Allow me to provide an absolute undisputed proof-of-fact about this matter straight from Lexus.
The official Lexus Manual in TIS (Technical Information System) for the 3rd Gen GS states the following:
'Periodic checks and replacement of the transmission fluid are not required.'
Here is the Lexus TIS Explanation of Maintenance Items - with specific attention to Transmission Fluid - for the 3rd Gen Lexus GS.
Allow me to provide an absolute undisputed proof-of-fact about this matter straight from Lexus.
The official Lexus Manual in TIS (Technical Information System) for the 3rd Gen GS states the following:
'Periodic checks and replacement of the transmission fluid are not required.'
Here is the Lexus TIS Explanation of Maintenance Items - with specific attention to Transmission Fluid - for the 3rd Gen Lexus GS.
Also add..... that it shows to service it for the same engine, trans, and fluid in other countries verified by owners other than the US one here posted on CL.
Lexus Champion
Joined: Nov 2014
Posts: 13,614
Likes: 2,920
From: Texas
Taken from TIS:
Transmission Fluid:
Transmission/Transfer Case:
Inspect transmission/transfer case for
signs of leakage. If you discover any
leakage, have it repaired immediately
by a qualified technician.
Note: The transmission/transfer case and
transmission fluid are a completely sealed unit.
Therefore, Periodic checks and replacement
of the transmission fluid are not required,
and there is no dipstick on the transmission.
Any repairs that require adding
or replacing fluid should be performed
by a qualified technician following
procedures in Lexus service
and repair publications.
Transmission Fluid:
Transmission/Transfer Case:
Inspect transmission/transfer case for
signs of leakage. If you discover any
leakage, have it repaired immediately
by a qualified technician.
Note: The transmission/transfer case and
transmission fluid are a completely sealed unit.
Therefore, Periodic checks and replacement
of the transmission fluid are not required,
and there is no dipstick on the transmission.
Any repairs that require adding
or replacing fluid should be performed
by a qualified technician following
procedures in Lexus service
and repair publications.
Last edited by bclexus; Aug 9, 2024 at 03:35 PM.
Lexus Champion
Joined: Nov 2014
Posts: 13,614
Likes: 2,920
From: Texas
I live in the United States in North America. I'm not interested in what might be recommended if the car is driven in the Outback of Australia, or the desert of UAE.
Last edited by bclexus; Aug 9, 2024 at 03:31 PM. Reason: orthography
Pole Position
Joined: Nov 2012
Posts: 2,082
Likes: 633
From: CA
Aisin makes the transmissions and they recommend servicing them. Common sense says every other car company includes ATF services, so why is Toyota different?
By the way, what is lifetime? Who's lifetime? Methuselah? Till the transmission dies?
By the way, what is lifetime? Who's lifetime? Methuselah? Till the transmission dies?
Joined: Feb 2001
Posts: 31,944
Likes: 2,737
From: North Carolina
I’ve asked in past threads on this same topic that members not continue to post the same arguments and content they have already posted in the many past threads
asking again, in the future just link to your posts (in one single reply) rather than repeat the same thing over and over in dozens of threads. Keep it topical to this specific generation GS
asking again, in the future just link to your posts (in one single reply) rather than repeat the same thing over and over in dozens of threads. Keep it topical to this specific generation GS
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