Mobil Pegasus 600 Series lubricants from Acculube are high performance natural gas engine oils primarily intended for the lubrication of modern medium and high-speed four-cycle engines operating on fuel that contains corrosive materials such as hydrogen sulphide or halogens (components containing chlorine, fluorine, bromine, etc.)

These engines generally have a lean-burn design, where increased manifold pressures prevent sufficient lubricant from reaching the valve guide areas; this results in low oil consumption which can lead to accelerated valve guide and valve recession. This effect also increases the potential for wear and acid attack of upper cylinder components from the acidic materials generated during combustion.

Mobil Pegasus 600 oils are gas engine oils with exceptional reserve alkalinity designed to offset the negative effects of acidic materials on engine components at 0.5% ash for Mobil Pegasus 605 and 1.0% ash for Mobil Pegasus 610. The excellent corrosion protection properties help prevent corrosive wear in cylinders, valve areas and bearings which can result in long engine life and low maintenance costs. The oils also provide excellent anti-wear and anti-scuff performance, which minimizes piston scuffing, scoring and wear on cylinder liners and piston rings.