Silkolene Comp 4 10/40W 1Litre

Formulated to meet the needs of both air and water-cooled 4-stroke engines, Pro 4 10W-40 XP is the recommended SAE grade for the majority of motorcycle manufacturers.
 
uring the development of XP, an extensive development program was conducted, new formulations rigorously tried and tested and compared with reputable competitor products in the same type engines. This research showed us what gave the best improvements across a range of requirements and led to the launch of our new and improved range of motorcycle engine oils utilising XP Technology.