Mobil Glygoyle 30 is a High Performance Lubricants

Product Description
Mobil Glygoyle™ 30 oils are polyalkyleneglycol-based (PAG) high performance lubricants that provide outstanding lubrication in extreme-temperature gear, bearing and circulation system applications in conditions well beyond the capabilities of mineral oils. They are shear-stable and have outstanding resistance to thermal degradation, oxidation and the formation of sludge and deposits. They incorporate a proprietary additive package designed to enhance EP/anti-wear protection, corrosion and rust protection and foam resistance without detracting from the intrinsic attributes of the PAG base oils.

Mobil Glygoyle 30  have very high viscosity indices and, being wax-free, they have extremely low pour points. Their coefficients of friction and traction (for example, in non-conforming gear or bearing contacts) are lower than for mineral oils. These exceptional lubricity characteristics help deliver lower operating temperatures in many applications.

Mobil Glygoyle 30  have provided outstanding performance in the most severe industrial applications for more than 25 years. They are recommended for use by major plastic calendar, paper machine bearing, compressor and gear manufacturers, and are the products of choice for many severe service applications.


Mobil Glygoyle lubricants are recommended for the most severe conditions in all types of plain and anti-friction
bearings and industrial enclosed gears up to a bulk oil temperature of 200º C. Specific applications include:

  • – Severe plastic calendar operations
  • – High temperature paper machine bearings
  • – Industrial enclosed gears – spur, bevel and worm gearing
  • – Reciprocating and rotary air, natural gas, CO2 and other process gasses

Application notes

Polyalkyleneglycol (PAG) based lubricants have some inherent excellent lubrication properties imparted by the PAG base oil. However, PAG based lubricants do have limitations with respect to compatibility with seal and coating materials, some varieties of light metal alloys and other lubricants. Before applying any PAG lubricant, contact the original equipment manufacturer for specific advice on the application. Compatibility with other lubricants

Mobil Glygoyle 30  are not compatible with mineral oils and most other synthetic lubricants.
Additionally, depending on the specific type of PAG base fluid, they may not be compatible with other PAG type lubricants. (e. g. Mobil Glygoyle 30  and Mobil Glygoyle ISO VG Series are not miscible)Mobil Glygoyle  30are not generally recommended for use in systems previously filled with mineral oils or PAO based synthetic lubricants. It is further recommended to check compatibility when topping up or replacing existing PAG fillings with Mobil Glygoyle products, generally the preference is to avoid mixtures by draining, flushing and refilling.When changing from mineral oil or other synthetic products to Mobil Glygoyle products, it is crtical to clean the system thoroughly and flush with suitable fluids prior to conversion. For further details please contact your ExxonMobil representative.


Mobil Glygoyle 30  along with all PAG based lubricants, are hygroscopic and absorb more water than mineral oils or synthetic hydrocarbons before. Therefore extra care should be taken not to expose PAG oils to excessive moisture. Due to their inherent high specific gravity, water does not drop to the bottom of reservoirs, but stays on top of the lubricant.

Seal compatibility

PAG based lubricants are not compatible with most standard seal materials used for mineral oils or synthetic
hydrocarbons. Incompatible materials are likely to shrink or swell, thus causing severe leakage or seizure of the seal. When converting from mineral oil or synthetic hydrocarbons to Mobil Glygoyle 30  seal compatibility must be considered.. FKM and VMQ are normally suitable for use with PAG. NBR materials may be used but have restricted temperature range. In all cases, operating conditions and the variability of elastomer properties from different manufactures should be considered. For best results, consult the equipment supplier or seal manufacturer for specific recommendations.

Light Metal Alloys

Mobil Glygoyle 30  and PAG lubricants are well suited for gear applications with ferrous and most non ferrous materials. However, Mobil Glygoyle products and PAG lubricants are not recommended for use with light metal alloys containing Aluminum or Magnesium. PAG lubricants can lead to increased wear when used with light metal alloys of this nature. Please consult the original equipment manufacturer for additional information.

Other Materials

Paints, coatings, and some plastics are not suitable for use with PAG lubricants. In general two component paints (reactive paints, epoxy resins) are suitable for use for interior coatings in contact with the lubricant.
Otherwise, interiors in contact with the lubricant should be left uncoated. Materials used for oil level gages,
inspection doors etc., should preferably be made of natural glass or polyamide materials. Other transparent
plastics, e.g. Plexiglas, may deteriorate and crack under stress.


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