Castrol Activ 4T 15W-50 4 Stroke Oil 4L

Castrol Activ 4T 15W-50 is a four-stroke motorcycle engine oil supplied in a 4 litre bottle, sized for a full oil change on most road and commuter bikes. It carries JASO MA-2 and API SL performance claims, so it suits four-stroke engines that share the oil between the engine, gearbox and a wet clutch.

The 15W-50 grade is aimed at riders in warmer Australian conditions and in stop-start commuting, where oil spends a lot of its life at high temperature. Castrol's wear protection formula is designed to hold that protection across the whole drain interval, including the start-up and warm-up period when most engine wear occurs.

Always check your owner's manual for the viscosity grade, specification and oil capacity your engine requires before use.

• 4 litre bottle of 15W-50 four-stroke motorcycle engine oil
• Meets JASO MA-2 — suitable for wet clutch and shared-sump four-stroke engines
• Meets API SL performance level
• Wear protection formula designed to protect for the full drain interval
• Significantly reduces engine wear during start-up and warm-up
• Improves engine cleanliness to help extend engine life
• Enhanced wear protection for transmission gears

• 1 x 4 litre bottle of Castrol Activ 4T 15W-50 engine oil

Check your owner's manual before use and confirm the engine calls for a 15W-50 grade meeting JASO MA-2 and API SL.
Change the oil at the interval specified by your motorcycle manufacturer, not at a generic interval.
Run the engine for a few minutes first so the oil is warm and drains more completely, then allow it to drain fully before refilling.
Replace the oil filter and sump plug washer at the same time as the oil where your manufacturer specifies it.
Fill to the manufacturer's stated capacity, then recheck the level on the sight glass or dipstick with the bike upright and the engine off.
Do not overfill — excess oil can cause pressure and clutch problems in shared-sump engines.
Avoid mixing with other oils or with additives; doing so can compromise the JASO MA-2 wet clutch friction properties.
Store the bottle sealed and upright in a cool, dry place out of direct sunlight, and keep it away from children and pets.
Never pour used oil down a drain or onto the ground — take it to a council waste facility or workshop that accepts used oil for recycling.
Wipe up spills promptly and wash skin with soap and water after prolonged contact.