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ramsey585

I Used Dexron -iv Synth Trans Fluid For Last 30k Miles

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It was my mistake to use the Dexron -IV synth instead of T-IV in my RX330, but it seems working fine for last 30,000 miles. I have no problem of any kind.

I understand the T-V is synth transmission fluid like Dexron -Iv synth.

I am planning to do next transmission fluid change and trying to decide if I want to get T-V or stay with Dexron I-V synth.

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The only question that needs to be asked, imo, is whether or not the Dextron meets the Toyota criteria. If it doesn't, then I wouldn't put it in my transmission, no matter what the savings. While I have no doubt that a 30000 mile run in isn't going to ruin your transmission, I wonder what the long term results are. What is the replacement cost of a Toyota/Lexus transmission. Vehicle manufacturers, auto, truck, bus, even airplane, specify lubricants that meet their engineering specifications. There has to be a reason that Toyota specified the Type IV.

I think you are in a minefield - you might make it out ok, you might not! :)

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