Mobil Pegasus 801
Mobil Pegasus 801 is an SAE 40 premium performance gas engine oil intended for the lubrication of all classes of gas engines operating at low, medium and high speeds where low ash or ashless oils are recommended. The formulation provides outstanding engine cleanliness by helping prevent the formation of carbon and ash deposits on pistons, ring belt areas, valves, combustion chambers and intake and exhaust ports. It also reduces port carboning in two-cycle gas engines and helps maintain efficient engine performance.
Mobil Pegasus 801 minimises engine wear and protects valve faces, seats and guides in turbocharged four-cycle engines. The oil provides exceptional anti-scuff performance in demanding applications and offers strong corrosion protection for internal engine components. These benefits help extend filter life, reduce maintenance requirements and increase the time between engine overhaul intervals.
The product is formulated using highly refined base oils combined with an advanced ashless detergent and anti-scuff additive system. This technology provides excellent chemical and thermal stability, resulting in cleaner engines and improved performance even in severe operating conditions. The ashless formulation delivers high cleanliness without increasing ash deposits that can negatively affect engine operation.
Mobil Pegasus 801 provides outstanding oxidation stability and nitration resistance, helping reduce sludge formation and engine deposits. The formulation also delivers excellent anti-wear and anti-scuff protection, improving piston, ring and liner life while providing effective break-in protection for high BMEP engines. These properties contribute to longer engine life and reduced operating costs.
Mobil Pegasus 801 is recommended for spark-ignited two- and four-cycle gas engines operating on clean fuel. It is suitable for engines driving generators for power production or gas compressors in transmission, storage and distribution applications. The product is also ideal for remote installations operating continuously or under intermittent standby conditions where reliability and extended service life are required.
Physical characteristics include a kinematic viscosity of approximately 125 mm²/s at 40°C and 13.2 mm²/s at 100°C, with a viscosity index of around 97. Mobil Pegasus 801 has a density of approximately 0.886 kg/l at 15°C, a flash point of approximately 249°C, a pour point of approximately −15°C, sulphated ash of approximately 0.13% and a total base number of approximately 2.2 mg KOH/g.
