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ws world standard

  1. WS ATF in transmission and differential vs T-IV ATF

    2007 Sequoia 2WD :attention: I have been told by the dealer that the Sequoia's transmission and differential are supposed to use World Standard WS ATF only. Currently I am using T-IV in the transmission and 80W90 gear oil in the differential. I am starting to hear a whining noise coming from the...