Transmission fluid, draining & flushing (The Mother thread)
#318
Pole Position
My recomendation is if you don't know how old the fluid is and it is discolored at all get or do a full flush not a power flush but one where they just exchange the fluid. If your fluid looks good or you know it has been done with in 40-50K miles I would would do a drain and fill for a while at every oil change you do.
#320
I have been using Mobil one for 241,000 miles 91 LS 400 and no problems also used in 1986 Cressida which the trans is close to LS 400, for 529,000 miles and no problem I put in a trans cooler and, I pump 4 quarts then refill 4 quarts drive 1 day and do it over again till I've done 12 quarts which gives it a 90 complete flush once a year. I've also put a mini trans cooler on my LS400power steering pump to help cool down the fluid it really gets hot and I also ues Mobil one trans fluid in the power steering and no problems at 241,000 and on my cressida my power steering went 529,000 and no problems with the pump or rack. I also use mobil one 75/90 synthetic gear lube in the rear end of the LS400/cressiday changing it every 40,000 miles no problems I use the new mobil one extended 5/30 in my engine and change it 15,000 miles which is normal for me. I drive 2,000 to 3,000 miles a month as sales engineer. I know of people going 600,000 miles same motor and trans just using dino oil so just change your oil and the LS 400/430 or 460 will last and last yoiu guessed it.
#321
My recomendation is if you don't know how old the fluid is and it is discolored at all get or do a full flush not a power flush but one where they just exchange the fluid. If your fluid looks good or you know it has been done with in 40-50K miles I would would do a drain and fill for a while at every oil change you do.
#322
I've also put a mini trans cooler on my LS400power steering pump to help cool down the fluid it really gets hot and I also ues Mobil one trans fluid in the power steering and no problems at 241,000 and on my cressida my power steering went 529,000 and no problems with the pump or rack.
#323
toyota type 4 vs dexron 3. whats the diff?
the trans in the ls400 is an a340e and the manual says to use toyota type 4 fluid only. it is exspensive as crap as im sure you all have noticed. now the trans in the mk3 supra, is also an a340e and it says to use dexron 3 fluid which is much cheaper. now what im wanting to know is what is the difference in the fluid? and why do we need to use the exspensive type 4 stuff for the same trans that used to use dexron 3? from what i can tell, the clutches in both transmissions are made of the same material. so why the big deal of type 4 over dexron 3? other then toyota wants more money when you purchase it? this is a serious question and i really would like to know whats different.
edit: been doing more research online and found this
http://www.bobistheoilguy.com/forums...Number=1217344
looks like they did the same thing to corrolla trannies. same model tranny was specified for dexron 3 most years, then changed to type 4 later. seems it is just a higher grade dexron 3. so in a bind i think dexron 3 would be fine. especially since it was specified for earlier model sc300's from what ive found online. and they use the same a340e trans as well.
edit: been doing more research online and found this
http://www.bobistheoilguy.com/forums...Number=1217344
looks like they did the same thing to corrolla trannies. same model tranny was specified for dexron 3 most years, then changed to type 4 later. seems it is just a higher grade dexron 3. so in a bind i think dexron 3 would be fine. especially since it was specified for earlier model sc300's from what ive found online. and they use the same a340e trans as well.
Last edited by williamb82; 07-21-10 at 05:38 AM.
#324
Driver School Candidate
Join Date: Jun 2010
Location: indiana
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I found that the Toyota fluid T-IV was less expensive than anything else. It was $36.48 + tax out the door at a southside Indy Toyota dealership for a case of 12 qts. Make sure to ask for a case discount. Don't be shy and call around to a few dealers.
#325
dealers here are crazy exspensive. and type 4 fluid at the local auto parts is $5/qt. its ridiculous, and they dont sell it in gallons. ill check the dealer though just to be sure.
#327
BahHumBug
iTrader: (10)
the LS400 trans in particular is very picky about the fluid it likes. t-IV is made to JWS3309 standards and is very different from dexron/mercon.
many many members on this board and others have had severe transmission problems (slipping/stalling/etc.. it is well documented) by using a d3/mercon spec fluid.
That being said, many "universal" fluids exist now compared to several years ago that claim to be t-iv compatible. be wary to a degree, the more fluids that a universal claims to be compatible with the less well it will work with your specific fluids (i've found). a jack of all trades/master of none applies to some extent.
straight d3/mercon wont work well at all.
many many members on this board and others have had severe transmission problems (slipping/stalling/etc.. it is well documented) by using a d3/mercon spec fluid.
That being said, many "universal" fluids exist now compared to several years ago that claim to be t-iv compatible. be wary to a degree, the more fluids that a universal claims to be compatible with the less well it will work with your specific fluids (i've found). a jack of all trades/master of none applies to some extent.
straight d3/mercon wont work well at all.
#328
Lexus Test Driver
iTrader: (1)
Toyota type T-IV is different from Dex-III. It is a highly friction-modified fluid (HFM) and is formulated to different specs.
Personally I've found T-IV to be the same price as D-III when I asked the right dealer. I called around and found prices going from $9.00 (Lexus dealer) down to $4.16 (Toyota dealer)
ps, I will delete this post soon. I'm only posting this to help a kindred Supra-owner out.
Personally I've found T-IV to be the same price as D-III when I asked the right dealer. I called around and found prices going from $9.00 (Lexus dealer) down to $4.16 (Toyota dealer)
ps, I will delete this post soon. I'm only posting this to help a kindred Supra-owner out.