LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Transmission fluid, draining & flushing (The Mother thread)

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Old 04-28-07, 11:50 AM
  #121  
o2GS43o
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Originally Posted by d1drift
i just changed the tran fluid with synthetic fluid bought at a local auto shop, not it shifts even ****ter, wtf, should i only use factory fluid? also do i need to replace the tran filter, if so, is it in the oil pan, do i to drop the pan to get to it?
Did you flush it or drain n fill or full fluid replacement?
Old 04-29-07, 09:02 AM
  #122  
d1drift
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Originally Posted by o2GS43o
Did you flush it or drain n fill or full fluid replacement?

i just drained and refilled, i'm going to redo it one more time within 50 miles or so , so i can get all that other crap out.
Old 04-29-07, 09:11 PM
  #123  
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Originally Posted by d1drift
i just drained and refilled, i'm going to redo it one more time within 50 miles or so , so i can get all that other crap out.
you'l need to drain fill like 3-4 times to get all the dexron out, best bet is paying $80-100 once to get it all flushed out with T-IV.

the other fluid has a tendency to make the TC slip very badly, overheating and killing it.
Old 05-01-07, 12:43 PM
  #124  
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Yeah, only use Toyota IV fluid. I've noticed that these tranny's dont like other fluids very much.
Old 05-02-07, 06:01 AM
  #125  
NJ240sxMan
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Has anyone tried using Lucasoil in the trans with the factory fluid 20% lucas / 80% factory fluid ? Or does that have the same catastrophic effect as using a synthetic trans oil?
Old 05-03-07, 07:52 AM
  #126  
SuperCoupe400
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When taking the tranny drain pan cover off to get to the filter, will that seal need to be replaced (under normal wear conditions)? Also, I was told that the filter could be just CLEANED, and that replacement was not necessary. Any truth to this?

Thanks.
Old 05-05-07, 11:10 AM
  #127  
lexusnutt
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Default Recently used Amsoil UATF

Last drain & Fill was with Amsoil.

Seems to shift smooth and crisp. I like it!
Old 05-05-07, 03:05 PM
  #128  
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Originally Posted by lexusnutt
Last drain & Fill was with Amsoil.

Seems to shift smooth and crisp. I like it!
thats coz amsoil is the only aftermarket transmission oil which claims to meet Type IV specs
Old 06-13-07, 02:39 PM
  #129  
Altec914
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Default Transmission oil

If you change the transmission oil (2 QTS) when you change the motor oil when should you change the transmission filter and is there one to change?
Old 06-13-07, 03:31 PM
  #130  
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no, there is a screen that you COULD clean out but ud have to drop the whole trans. pan.

and the 2qts is only a drain and fill, you'll need approx 8-15 if u want to flush.

make sure to use only Toyota T-IV transmission fluid, nothing else will work properly.
Old 06-15-07, 04:29 PM
  #131  
CO-LS400
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YES!! Make sure you only use Toyota/Lexus Fluid! I think its type IV

I did not take any chances I had the dealer do it for $160 bucks. The dealer is a rip off buy I did not want to take any chances, with someone screwing it up.
Old 06-21-07, 05:16 PM
  #132  
LexChamp
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Default PS Filter

$160.00, bro, I think you did get ripped off. I just bought the transmission filter at Advance Auto Part for $38.00. If you check out the LexLS Tutorial on changing the Trans filter you can see is a pretty easy job. You can do it yourself or have a mechanic do it for less than fifty dollars.

I just cleaned power steering Solenoid and changed one of the O2 Sensors for 30 dollars. I Showed the mechanic the LexLS tutorial and he went from there. Everyhting took lass than an hour. I think we spent more time viewing the tutorials to make sure we knew what we were doing.

A lot of the maintanance can be done by a local mechanic, however, that is if you trust your mechanic to do it and if you dont mind getting a litte dirty yourself.
Old 06-22-07, 07:01 AM
  #133  
Alan D
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It is very easy to do the 2 qt drain and fill when you are changing your oil. Just a drain plug to remove on the bottom of the transmission.
Old 06-22-07, 02:48 PM
  #134  
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Yes it is very easy to do.. I did mine about two days ago.. i just bought the transmission fulid from Kragen Autoparts.. I bought 8 quarts.. it cost me $27.00 for all eight.. I did the drain and refil twice.. i drained everything. refill it then drove for 20 minutes and repeat the drain and fill cycle.

Question: Is there any fully synthetic transmission fluid we can use?

Thank you..
Old 06-22-07, 03:05 PM
  #135  
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Originally Posted by pinoiryder
Yes it is very easy to do.. I did mine about two days ago.. i just bought the transmission fulid from Kragen Autoparts.. I bought 8 quarts.. it cost me $27.00 for all eight.. I did the drain and refil twice.. i drained everything. refill it then drove for 20 minutes and repeat the drain and fill cycle.

Question: Is there any fully synthetic transmission fluid we can use?

Thank you..
what trans fluid did u buy?!!?

You HAVE to use Toyota T-IV fluid, which can ONLY be bought from a dealership.

sounds like u used regular old Dexron/Mercon fluid, you HAVE to flush it NOW, the transmission can be easily damaged if you dont, also you will experience MAJOR transmission glitches.


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