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#2299204 - 06/27/11 10:33 AM Re: Used toyota t-iv instead of toyota-WS [Re: dkrivosheyev]
Ben2009Vibe Offline


Registered: 06/25/11
Posts: 8
Loc: Indianapolis, IN
The 2.4 is 2AZ-FE, which has been carried over. Didn't know the 1.8 got something new. Interesting. Still I find it strange that t-iv was the required ATF for a long time, and then its switched to WS, but t-iv and WS not being interchangeable.

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#2299229 - 06/27/11 10:46 AM Re: Used toyota t-iv instead of toyota-WS [Re: Ben2009Vibe]
dkrivosheyev Offline


Registered: 04/12/10
Posts: 118
Loc: FL, USA
I am still yet to find a clear answer if WS and T-IV are interchangable or not. If U340E tranny was used in 2005 celica and required T-IV at that time, why does 2009 - 2011 1.8 corollas with the SAME transmission require WS now? It even says in owners manual that only WS can be used. Again, I switched to Redline D4 and did not see any problems, only improvements...

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#2299281 - 06/27/11 11:24 AM Re: Used toyota t-iv instead of toyota-WS [Re: dkrivosheyev]
Ben2009Vibe Offline


Registered: 06/25/11
Posts: 8
Loc: Indianapolis, IN
Thats what i have been trying to find out as well. Have been reading thru posts on this site as well as other forums and have not been able to find anything definitive. One thing I read and found interesting was that even though the model number for a particular trans didn't change over the years, it still could have updated internal clutches/packs designed now for WS, so if a thicker non-synthetic like t-iv was used, the trans may react differently as compared to the WS specified. Again, don't know if thats true or not. I am certainly not an expert, just what i read.

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#2299374 - 06/27/11 12:51 PM Re: Used toyota t-iv instead of toyota-WS [Re: 229]
lexus114 Offline


Registered: 05/12/08
Posts: 6137
Loc: Easton, PA
Originally Posted By: 229
WS is thinner viscosity and group III+. You have replaced it all. Why worry now? The WS may turn dark soon but do not let that concern you.



Thats like saying; "pay no attention to the man behind the curtain" ontome oz
_________________________
2012 Mercedes-Benz C300 4matic
2015 Lexus RX350 AWD

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#2299399 - 06/27/11 01:06 PM Re: Used toyota t-iv instead of toyota-WS [Re: Ben2009Vibe]
benjamming Offline


Registered: 01/03/04
Posts: 5809
Loc: northern Alabama
lexus114,

No it's not. 229 is repeating the fact of dye fading not being an indicator of oil needing to be changed.

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#2299407 - 06/27/11 01:13 PM Re: Used toyota t-iv instead of toyota-WS [Re: Ben2009Vibe]
dkrivosheyev Offline


Registered: 04/12/10
Posts: 118
Loc: FL, USA
Originally Posted By: Ben2009Vibe
Thats what i have been trying to find out as well. Have been reading thru posts on this site as well as other forums and have not been able to find anything definitive. One thing I read and found interesting was that even though the model number for a particular trans didn't change over the years, it still could have updated internal clutches/packs designed now for WS, so if a thicker non-synthetic like t-iv was used, the trans may react differently as compared to the WS specified. Again, don't know if thats true or not. I am certainly not an expert, just what i read.


That may indeed be the case; however, after changing my factory fill of WS with Redline D4 (also synthetic), I did not notice any change in the shift quality. I don't know; however, how this transmission would react to changing from WS to the actual T-IV...

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#2299492 - 06/27/11 02:21 PM Re: Used toyota t-iv instead of toyota-WS [Re: benjamming]
lexus114 Offline


Registered: 05/12/08
Posts: 6137
Loc: Easton, PA
Originally Posted By: benjamming
lexus114,

No it's not. 229 is repeating the fact of dye fading not being an indicator of oil needing to be changed.



Okay.
_________________________
2012 Mercedes-Benz C300 4matic
2015 Lexus RX350 AWD

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