Purpose and Specifications

Castrol Power 1 4T 10W-40 is a premium synthetic motorcycle engine oil engineered for 4-stroke engines. This oil reduces internal friction by up to 30%, delivering faster acceleration and smoother power delivery at the throttle. It protects three critical zones: engine, clutch, and gearbox through Trizone Technology.

Key Performance Features:

• Flows quickly at cold starts (10W rating) while maintaining strength at high temperatures (40 rating)
• Reduces internal engine friction for improved acceleration and responsiveness
• Protects wet clutches and gearboxes for smooth shifting
• Complies with API SL and JASO MA-2 specifications for modern 4-stroke bikes
• Suitable for both carbureted and fuel-injected motorcycles

Operating Temperature Range: Performs reliably from cold winter starts to sustained high-temperature riding conditions typical of air-cooled and water-cooled engines.

When to Use / Replace?

Replace Castrol Power 1 4T 10W-40 every 5,000 to 8,000 kilometers or every 3 to 6 months, whichever comes first. For motorcycles used in short trips or stop-and-go traffic, more frequent changes (every 3 months) help maintain optimal engine cleanliness. This 1-liter bottle is ideal for single oil changes on most street bikes or as a top-up for larger capacity engines.

Best For: Riders seeking improved throttle response, better acceleration, and reliable protection during spirited riding or daily commuting. Particularly effective for bikes that previously used heavier oils (like 20W-50), offering easier cold starts and quicker warm-up times.

Frequently Asked Questions

• Can I use this oil in my older motorcycle? Yes, if your owner's manual recommends API SL or JASO MA-2 specifications. However, always verify your bike's manual first, as some older models may require different viscosity grades.
• How long does an unopened bottle last? Castrol synthetic oils maintain quality for several years when stored in a cool, dry place away from direct sunlight. Once opened, use within one season for best results.
• Will this oil improve my bike's fuel economy? The reduced friction can contribute to slightly better fuel efficiency compared to heavier oils, though the primary benefit is improved acceleration and engine responsiveness rather than dramatic fuel savings.