JASO ATF N-1

JASO ATF N‑1 is a Japanese standard that defines the requirements for automatic transmission fluids, including their viscosity, oxidation stability, wear protection, and ability to transmit precise friction torque in automatic gearbox systems. The specification is targeted at light automatic transmissions for motorcycles and scooters, as well as some passenger‑car automatic gearboxes used in Japanese and Asian models. Fluids that meet JASO ATF N‑1 provide rapid cooling, resistance to overheating, and minimal deposit formation, which is important for the longevity of friction components. When selecting an XENUM product, the JASO ATF N‑1 mark guarantees compatibility with these transmissions without the need for additional modifications, and also allows the safe use of newer JASO ATFs that are backward compatible, such as JASO ATF D‑II or F‑1, without risking warranty loss.