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calvin9853

Dexron VI In Hydraulics System Speced For Dexron III

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I have a hydraulic system in my motor coach that calls for Dexron III. Can I use Dexron VI? I read somewhere that Dexron VI is not compatible with Viton seals.

I don't know if the hydraulic system has any Viton seals but I don't want to take a chance if this is true. The hydraulic reservoir fluid runs both my power steering and my radiator fan. I want to change filters and put in four gallons to refill. The system holds 11 gallons. Can I mix 4 gallons of the Dexron VI with the Dexron III in the system, assuming it does no harm to the seals?

Thank You.

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Calvin, when you do go to purchase the oil make sure to read the label on the container, don't take the word of the parts guy that its compatible. There is a mentality out in the industry due to lack of training and experience that "one size fits all", don't fall for it!

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