Fluid exchange??

Eyeing on soon doing a drain and fill on the trans fluid myself. The previous time the fluid was serviced at the dealer, the invoice called it an "exchange'"

  1. What exactly is an exchange in this context?
  2. It looks like they used Valvoline MaxLife trans fluid. Can I use Toyota ATF WS instead for the drain and fill??

Eyeing on soon doing a drain and fill on the trans fluid myself. The previous time the fluid was serviced at the dealer, the invoice called it an "exchange'"

  1. What exactly is an exchange in this context?
  2. It looks like they used Valvoline MaxLife trans fluid. Can I use Toyota ATF WS instead for the drain and fill??