Castrol Activ 4T 20W-40 Synthetic Technology Engine Oil 1L

Castrol Activ 4T 20W-40 Synthetic Technology Engine Oil 1L is the 20W-40 four-stroke motorcycle engine-oil listing at GearBlack in Bangladesh. Check the model, viscosity and pack size together when comparing products.

The Activ 20W-40 bottle supplied for this listing says Synthetic Technology. It is the 20W-40 motorcycle version, rather than Activ Scooter or a generic mineral oil description.

Castrol’s Activ range uses Actibond technology to help protect against wear, deposits and corrosion. “Synthetic Technology” on the supplied packaging does not by itself establish whether this version is fully or semi-synthetic.

20W-40 has the same SAE hot-viscosity class 40 as 10W-40, but a different low-temperature class. The numbers are not a temperature recommendation; choose the viscosity range allowed in your manual.

This listing contains 1 Litre. Bottle volume is not the engine’s refill requirement: service refill, filter replacement and dry-engine capacity can differ. Measure the amount required by your exact manual.

Before ordering, match the manual’s API requirement and JASO clutch specification with the bottle. Follow its oil-change schedule, including any severe-use instructions for frequent short trips or heavy traffic.