Feel confident in providing the ultimate in engine protection and performance for your motorcycle, quad or ATV with Penrite MC-4ST 15W-50 100% PAO & Ester motorcycle engine oil. Formulated using 100% PAO & Ester synthetic base oils and the latest technology additives, this engine oil provides superior oil film strength and high temperature resistance while protecting against corrosion, oil oxidation, piston deposits and sludge even under the harshest operating conditions. The shear stable formulation protects engine oil from viscosity loss while maintaining engine oil pressure and the *FULL ZINC + anti-wear package (1800+ ppm) provides the ultimate in engine wear protection. Penrite MC-4ST not only protects your engine, it also provides optimum clutch slip prevention in engines fitted with wet type clutch systems and protects and lubricates motorcycle gearboxes. Penrite MC-4ST 15W-50 100% PAO & Ester is suitable for use in most four stroke road, sport, dirt and enduro bikes where JASO MA, MA1, MA2, API SN/CF or earlier specification SAE 15W-40, 20W-40 or 15W-50 oil is recommended. Penrite MC-4ST can also be used in ATVs, quad bikes scooters, stationary engines, generators and other engine that require this specification of engine oil. Safe to use with most petrol, racing and other conventional fuel types. To find the engine oil type and weight suggested for your vehicle check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team. *Full Zinc + = Zinc + Boron level combined as total anti-wear package.