Mobil Pegasus^TM 1005 is a new generation of Mobil Pegasus high performance gas engine oil. Provides a high level of protection for modern high output, low emission four-stroke gas engines while maintaining the superior performance of earlier models. This product has excellent oxidative stability, anti-nitration and thermal stability, and also has excellent anti-wear properties, protects high-load valve system parts, pistons, cylinder liners, bearings and gear sets, and is compatible with catalytic converter materials. compatibility.