Toyota Genuine ATF Type T-IV is an original equipment manufacturer (OEM) automatic transmission fluid formulated for compatible Toyota, Lexus, and Scion automatic transmissions that specifically require the T-IV specification.

Its specialised friction-modifier formulation is designed to support smooth, consistent gear shifting and help minimise transmission shudder. The fluid also provides effective lubrication, thermal stability, and wear protection to support reliable transmission performance under a range of operating conditions.