Castrol POWER1 CRUISE 4T 15W50 is a sophisticated exceptional quality part-synthetic engine oil particularly designed for 4- stroke cruiser and tourer bikes to match long riding conditions. Huge bikes can get sluggish due to the fact that of heat and friction, which can rob the engine of power. Castrol POWER1 CRUISE with Power Sustain Technology ™ manages heat and friction in big bikes, making sure continuous power delivery and supplies On-Demand Acceleration. It appropriates for all 4-stroke bike engines, both carburetor and fuel injected where API SN (or listed below) and JASO MA2 are advised. Castrol POWER1 CRUISE 15W50 is available in a 2.5 L pack size. * Much better oxidation resistance compared to 15W50 oil without Power Sustain technology TM in a PDSC oxidation test performed by Castrol. ** Power measured at the end of a 200-hour motorcycle engine test developed by Castrol using a Honda CBR300 engine. *** The suggestions herein are based on our understanding and info assembled from various sources relating to the engine make, sump sizes and requirements of the appropriate bike models available in public domain. This information is attended to convenience just. The client's conditions of use and application of the recommended items are beyond Castrol's control. Please check service manuals of the bike for precise engine oil specs and sump sizes.