Synthesis Motorcycle Engine Oil Series A range of championship winning, 100% synthetic, complex ester motorcycle engine lubricants.  The Rock Oil Synthesis brand has been around for over 20 years and has become synonymous within the road racing fraternity for supreme performance. Due to our commitment to continuous Research & Development the Rock Oil Synthesis series of products are as advanced as ever. Features  Benefits Tri-Synthetic Formula includes Complex Ester, Longer life to allow extended drain intervals in the most PAO and a proprietary next generation base oil arduous applications and environments Market leading salicylate additive technology Maintains ultra clean internal engine components throughout drain interval Outstanding shear stability through use of active, Important for maintaining stay-in-grade viscosity and stable oil self-healing Viscosity Modifiers pressure throughout the life of the product Exceptionally low NOACK Volatility  3 x lower oil consumption in a high temperature environment* Employs market leading Anti-Wear additives Up to 60% reduction in valve-train wear* Passes JASO T903 wet clutch friction test Assured use in motorcycle engines with combined to highest level – JASO MA2 / JASO MA crankcase, gearbox and oil immersed (wet) clutch Available in 5 viscosity grades: 5W-30, Complete motorcycle OEM recommendation coverage 5W-40, 10W-40, 10W-50 & 10W-60 *Data based on Synthesis 4 10W-40, compared to API SN test limits and reference oils.