Castrol POWER1 ULTIMATE 5W-40 4-AT Synthetic Engine Oil

Castrol POWER1 ULTIMATE 5W‑40 4‑AT is a high-performance full-synthetic engine oil engineered specifically for modern gearless scooters. Utilizing advanced Trizone technology, it forms a protective film across the engine, gearbox, and clutch to significantly reduce internal friction—resulting in faster throttle response, smoother acceleration, and smoother starts. The 5W‑40 viscosity ensures excellent cold-start performance and stable lubrication in both cooler mornings and hot urban conditions, making it ideal for urban commuting year-round.

The oil's robust formulation resists thermal breakdown and maintains its protective properties even under extended high-temperature, stop-and-go riding situations. It helps keep the engine clean by fighting sludge and deposit buildup, contributing to consistent power delivery and improved durability. Compatible with API SN and JASO MB specifications, Castrol POWER1 ULTIMATE 5W‑40 4‑AT is ideal for scooters like Honda Activa, TVS Jupiter, Suzuki Access, Hero Maestro, and other models that recommend or require full-synthetic 5W‑40 4‑AT oils. Choose this oil for enhanced engine life, smoother gear transitions, better mileage, and a premium riding experience that lasts.