Mobil DTE Extra Heavy is a highly refined mineral based lubricant that is primarily used circulation lubrication systems for gears and bearings. DTE "Double Letter" Series is a line of Mobil Lubricants that have heavier viscosity to protect gears and heavily loaded bearings. They have outstanding oxidation and rust resistance but do not contain EP (Extreme Pressure) additives. Extra Heavy represents the thickness of the oil which is an International Standards Organization Viscosity Grade (ISO VG) 150.
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