Go Back   Club Lexus Forums > Lexus Model Forums > LS Models > LS400
Sign in using an external account
Register Forgot Password?

Transmission fluid, draining & flushing (The Mother thread)

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 01-01-02, 09:49 PM   #1
Lvangundy
Guest
Trader Score: ()
 
Posts: n/a
Default Transmission fluid, draining & flushing (The Mother thread)

I noticed nobody really posts anything in the sub threads so I'll post here.

I have a 1990 LS400 with 125k miles on it. I recently bought it in Oct. and have put 6,000 miles on it since then. It was all dealer (Toyota Specialist) maintained by the previous owner and garage kept, also usually driven just around town.

I'm a young buck and have driven it pretty hard while I've had it -(burn outs, wide open throttle,racing etc.) and now cus of my need to experiment the tranmission is starting to have problems.
On regular acceleration between idle (600rpm) and first shift (about 1500) the car studders/slows at about 800-1000 rpm then continues on as normal to 2nd gear at 1500rpm. When shifting it feels like it shifts twice and sometimes is delayed depending on how cold the trans/engine is.
The other problem relates to park shifting. I've read that the delay between shifting from P to R and to D is supposed to be happen within less than 1 second. (.03-.08 seconds). Mine on the other hand is about 1.5 seconds. I shift from P to R and there is that 1.5-2.0 second delay before the car hunches forward.
More recently when downshifting (slowing) there is a small jolt that can be felt.

I've read that slow take-offs may be related to spark plugs, which havent been replaced with the life of the car. I will change those soon. But what are the typical estimations about these tranmission problems? I've been told a mechanic will drop the tranmission and clean it out and change all fluids. Is this correct?
Are there any other options?

If anyone has any comments, thanks alot!

Happy New Year Lexus lovers!
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!

Last edited by RA40; 04-03-12 at 03:31 PM.. Reason: Merge & prep for FAQ
  Reply With Quote
Old 01-02-02, 07:49 AM   #2
VQT
Lexus Test Driver
Trader Score: (0)
 
Join Date: Feb 2001
Location: Las Vegas, NV
Posts: 1,505
Default

Change your trans. fluid, make sure it is Toyota type T-IV. It only takes 2 liters time. You can do this yourself.
VQT is offline   Reply With Quote
Old 02-06-02, 10:59 PM   #3
Lvangundy
Guest
Trader Score: ()
 
Posts: n/a
Default Tranmission fluid type (The Mother thread)

I've heard twice now that regular Dexron ATF is bad or isn't recommended for use in Lexus cars. Where I took my car to get the transmission flushed they said they had never heard of type IV being used in the transmission, only for rear differential.
What is the main difference? Does dexron damage the transmission?
After the flush 1st and 2nd still shift hard (I'm assuming the gears are just worn) but the acceleration at power peak is smoother and highway driving is much improved. It has Dexron ATf fluid in it.

Last edited by RA40; 04-02-12 at 11:15 PM..
  Reply With Quote
Old 02-07-02, 04:19 AM   #4
additude
Pole Position
Trader Score: (0)
 
Join Date: May 2001
Location: OBX-NC
Posts: 373
Default

About the only thing a person can say in a situation like this is to follow the manufacturers recommendations.

Call your dealership and ask someone in service.

If you would, post what you find back here.
__________________
If you want something you have never had before;
You are going to have to do something you have never done before.
additude is offline   Reply With Quote
Old 02-07-02, 06:14 AM   #5
mlevk
Driver
Trader Score: (0)
 
Join Date: Jun 2001
Posts: 149
Thumbs down

Have your transmission drained and reflushed !

The dipstick says ATF TYPE 2, refering to TOYOTA TYPE 2, not
ATF DEXTRON TYPE 2.

It has since been replaced with TOYOTA TYPE 4.

DEXTRON ATF 2 or 4 is not the same ! It is used mainly in GM
products. The ATF from any TOYOTA Dealer comes in a large
metal container. If you are not having it done at the dealer,
then I would insist they use it or I would go somewhere else.
I had them keep the can and invoice when I had mine done.
mlevk is offline   Reply With Quote
Old 02-07-02, 06:36 AM   #6
VQT
Lexus Test Driver
Trader Score: (0)
 
Join Date: Feb 2001
Location: Las Vegas, NV
Posts: 1,505
Default Re: Tranmission fluid type

SC400 and LS400 use Toyota trans. fluid Type T-II, Toyota has since upgrade their trans. fluid to Typr T-IV. SC300 use Dexron trans. I think Type T-II or Type T-IV has to do with the smoothness of the LS/SC400 transmission.
Yes, you're in big trouble. Got to flush the trans. and refill with Toyota trans. fluid type T-IV.
The rear differential use thicker oil 80-90W. The guy that told you that was an idiot.
Like Honda transmission, only use Honda trans. fluid, not Dexron II.
Hope you didn't ruin your trans. yet.

Quote:
Originally posted by lvangundy
I've heard twice now that regular Dexron ATF is bad or isn't recommended for use in Lexus cars. Where I took my car to get the transmission flushed they said they had never heard of type IV being used in the transmission, only for rear differential.
What is the main difference? Does dexron damage the transmission?
After the flush 1st and 2nd still shift hard (I'm assuming the gears are just worn) but the acceleration at power peak is smoother and highway driving is much improved. It has Dexron ATf fluid in it.
VQT is offline   Reply With Quote
Old 12-11-02, 04:00 PM   #7
Maeve
Lexus Test Driver
Trader Score: (2)
 
Maeve's Avatar
 
Join Date: Dec 2002
Location: California
Posts: 807
Question Oil Transmission

Hi guys, I got a question..

I am planning to change my tranny fruid. I heard about the Mobil 1 syntetic oil and the dextron 111. Which one is better? How My ride is a '94 LS 400 and it's got 118000 miles on it.
Some people use Mobil One and they said the gears work smoother. Is that right?

Thanks for the help

Dom
Maeve is offline   Reply With Quote
Old 12-11-02, 04:57 PM   #8
PERRYinLA
Lexus Champion
Trader Score: (0)
 
PERRYinLA's Avatar
 
Join Date: Jul 2001
Location: Orange County, California
Posts: 1,910
Default

Holy toledo that's gotta be one of the most debated topics on this web page! For an hour's worth of reading on the subject, just do a search on "transmission fluid change".

The recommended Toyota ATF fluid will cost you from $22 to $40 a can, and you need 2 or 3 cans for a full change, so there is a lot of interest in suitable alternatives. There have been a few postings from owners that have tried other types of ATF, and they initially report that the car shifts fine. Then a flurry of posts appear telling him he's gonna ruin his tranny if he keeps the non-Toyota stuff in there. Then the original poster collapses like a house of cards and puts in the Toyota Type T ATF.

Seen that happen at least twice on the SC forum, and it's probably occurred in the GS and LS forums, too.

Last edited by PERRYinLA; 12-11-02 at 07:26 PM..
PERRYinLA is offline   Reply With Quote
Old 12-11-02, 10:06 PM   #9
VQT
Lexus Test Driver
Trader Score: (0)
 
Join Date: Feb 2001
Location: Las Vegas, NV
Posts: 1,505
Default

Quote:
Originally posted by PERRYinLA
There have been a few postings from owners that have tried other types of ATF, and they initially report that the car shifts fine. Then a flurry of posts appear telling him he's gonna ruin his tranny if he keeps the non-Toyota stuff in there. Then the original poster collapses like a house of cards and puts in the Toyota Type T ATF.

Seen that happen at least twice on the SC forum, and it's probably occurred in the GS and LS forums, too.
VQT is offline   Reply With Quote
Old 12-12-02, 03:08 PM   #10
Lvangundy
Guest
Trader Score: ()
 
Posts: n/a
Default

PerryinLA

Exactly right!

I do believe that because of all the talk of additives to keep the tranny running it's smoothest etc.. I'll stick with Totoyta Type IV. A shop once out dexron 2 in my tranny w/ a mix of toyota fluid. The car shifted a *little* harder than with the Type IV I have in there now. I also had a complete 'running' flush and used 8 or so cans of type IV.

Stick with Type IV!
  Reply With Quote
Old 12-13-02, 02:09 PM   #11
Maeve
Lexus Test Driver
Trader Score: (2)
 
Maeve's Avatar
 
Join Date: Dec 2002
Location: California
Posts: 807
Talking

thanks for the info guys.

I will replace it this weekend
Maeve is offline   Reply With Quote
Old 12-16-02, 07:03 PM   #12
seanl
Pole Position
Trader Score: (0)
 
seanl's Avatar
 
Join Date: Jul 2001
Location: California
Posts: 218
Default

For automatic transmissions, I always stick with the manufacturers' fluid...they all have different additive packages based on their design specs.

I always use Mobil 1 engine oil though.
__________________
Sean L.
'02 Audi S8
'07 Subaru WRX STi
'10 Lexus RX 350 AWD
'97 LS400 Coach Edition
seanl is offline   Reply With Quote
Old 06-03-03, 09:34 AM   #13
ychachad
Pole Position
Trader Score: (0)
 
ychachad's Avatar
 
Join Date: Jan 2003
Location: Florida
Posts: 389
Default Simple Tip - Transmission Fluid

Everyone knows that changing this fluid completely is either a hassle or expensive ($140 at the Lexus Dealership, or $110 at Toyota). Here's what I do. At every ENGINE oil change, 5,000 miles, I also drain the transmission fluid in the pan, which is exactly 2 quarts. Cost is $9.00 for 2 quarts of the Type-IV fluid. At this rate, doing partial changes, you can effectively flush out a lot of the old fluid (albeit with some new stuff) over a period of time. Now, at every 5,000 miles, if you change 2 quarts, you can change the oil 15 times before it costs you $140. At this time, you have also put 75,000 miles on your car. Ordinarily, the dealership will tell you to change your fluid every 30,000 miles or so, so you are looking at 2.5 x 140 = $350 for 75,000 miles. So now you see, with the partial mehtod, you don't get a full oil change, but you continually add new fluid, continually delete residue and particulates, get the satisfaction of a job well done, save a lot of money, and keep loving your Lexus. My fluid has turned from brown to mostly clear red in about 5 changes, and of course it is improving. Cheers.
__________________
Y. Chachad
2007 Lexus LS460 - 2k miles
2002 Subaru Impreza WRX - 106k miles
1995 Lexus LS400 - 181k miles
1995 MB S420 - 90k miles
1989 Honda NX250 - 1.5k original miles

Last edited by ychachad; 06-09-03 at 08:33 PM..
ychachad is offline   Reply With Quote
Old 06-03-03, 10:30 AM   #14
Lvangundy
Guest
Trader Score: ()
 
Posts: n/a
Default

Good tip.

It seems most people overlook the transmission fluid. My friend has a 1998 corolla which prety much has only had the oil changes done - even then it's sometimes been in 7-10K mile intervals.

He's never even thought about changing the transmission fluid. ?!
  Reply With Quote
Old 06-04-03, 09:58 PM   #15
cnacne
Driver School Candidate
Trader Score: (0)
 
Join Date: Jun 2002
Location: Illinois
Posts: 27
Send a message via AIM to cnacne
Default

And how often do you change the filter?

Joe
cnacne is offline   Reply With Quote
Old 06-04-03, 09:58 PM
 
 
 
 
Reply

Tags
02, 0888602305, 1990, 1991, 1992, 1995, 1997, 1999, 2000, 2004, 2005, 2008, 350, 400, 4000, 470, 91, 92, 93, 95, 96, 98, 99, a, a340e, add, additive, amount, amsoil, atf, auto, black, brown, call, car, castrol, change, changing, cheap, check, checking, circulating, city, club, coil, cost, date, dexron, dextron, difference, direct, diy, drain, drainfill, dys, es250, es300, es330, es350, fill, filter, fiuid, fj80, fluid, fluids, flush, frequency, fulid, gearbox, good, gs300, gs400, gs430, gx, gx470, hose, hot, ii, iii, is300, is350, iv, landcruiser, level, lexus, life, location, ls, ls400, ls460, lubegard, lx470, max, maxlife, mechanic, mercon, needed, not, oil, or, pan, plug, powersteering, price, problems, put, quarts, refill, replace, replacement, rough, rx300, sc300, sc400, shift, shifting, slipping, slips, smoother, substitute, suggested, syenthetic, synthetic, t4, teal, tii, tiv, toyota, tranmission, tranny, trans, transmission, transmisson, tundra, turns, type, upshift, valvoline, ws, xmission, york

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2008 RX350 Transmission Slipping Tom H RX - Second Generation 44 06-11-14 10:04 AM
hard shifting with delay and hesitation bchehab RX - First Generation 32 07-23-13 08:20 AM
Strange transmission problem occurs, please see if you can help bowen.chau RX - First Generation 6 06-02-13 07:58 PM
Question about transmission shifts? BULLIT IS F 9 04-27-13 10:35 AM
Transmission problem '99 LS400 dantampa LS400 37 11-12-12 08:02 AM

All times are GMT -7. The time now is 09:55 PM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info