What type Automatictic Transmission Fluid Does Toyota recomend for this Vehicle

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Sears put in max valvoline and when i called valvoline in oswego N.y. they told me the oil which was put in should have been type IV(4) or ask the mechanic to put an additive at least 2 pints,this is really frustrating,I thought there was something wrong when the ATF was pale and smelled like oil instead of transmission fluid so is it what type of dexron which I think was used before? please advise!