Used toyota t-iv instead of toyota-WS

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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...
 
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.
 
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