Automatic transmission fluid flush

[Thymeclock]

Im assuming youre referring to Valvoline MaxLife® DEX/MERC ATF ?
From what I gather, their FAQ seems to infer that I dont need to flush the whole system to replace it with Valvo since it's compatible with the current ATF (type IV)? Or is it recommended to replace all the ATF with the new one (Valvo)?

Thanks

It's entirely compatible. You wouldn't be able to change all the fluid anyway, as some of it is in the torque converter.

The Valvo Max is expensive, though. Eventually I plan to replenish with Dexron III as it is much cheaper. The difference is that the !V is a partial synthetic fluid and the previous type III is not.