Mobil Gargoyle Arctic 68 NH - Refrigeration Oil for Ammonia (R-717) application - Performance profile

Oct 6, 2026

Uploaded by Riley

Mobil Gargoyle™ Arctic 68 NH is a high performance refrigeration oil formulated for lubrication of ammonia (NH3, R-717) reciprocating and screw compressors. It delivers low temperature performance with low volatility and thermal stability to help reduce oil consumption. The oil has very low miscibility with ammonia, limiting oil thinning and reducing oil carry-over to improve oil separator efficiency. A wide operating temperature range and stable viscosity index help maintain optimum viscosity across compressor parts. The profile also highlights wear protection, environmental benefits via longer product life, and productivity through reduced downtime and improved evaporator efficiency.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Key benefits

Low temperature oil flow and volatility control

Ammonia compatibility and miscibility

Viscosity index and temperature range

Typical properties

Viscosity and density data

Pour point and flash point

Application considerations

Reciprocating and screw compressors

Cylinder and bearing lubrication

Safety and environmental care

Wear protection and reduced waste

Productivity and maintenance impact

Performance profile Mobil Gargoyle™ Arctic 68 NH Refrigeration Oil for Ammonia (R-717) application Energy lives here™ Key benefits Low Brookfield viscosity contributes to good oil flow at low temperatures Potentially reduces oil consumption due to low volatility Excellent viscosity control across wide operating temperatures Refrigerant compatibility contributes to oil separator efficiency (very low miscibility with NH3) Mobil Gargoyle Arctic 68 NH provides a superior oil flow at low temperatures of cP * * As perASTM D 2983 Mobil Gargoyle Arctic 68 NH provides superior oil flow at low temperatures compared to other mineral lubricants Brookfield Viscosity @ -20°C (cP, ASTM D 2983) cP 25000 30000 25000 20000 15000 10000 5000 0 MN (Mineral Naphthenic) MP 1 (Mineral Paraffinic) MP 2 (Mineral Paraffinic) MP 3 (Mineral Paraffinic) MP 4 (Mineral Paraffinic) Mobil Gargoyle Arctic 68 NH Mobil Gargoyle™ Arctic 68 NH is a high performance refrigeration oil designed specifically for the lubrication of refrigeration reciprocating and screw compressors using ammonia (NH3, R-717) . It is formulated with high quality mineral paraffinic technology providing of the following benefits to the end user: ï Excellent low temperature performance, low volatility and thermal stability helping to reduce oil consumption and increase equipment life ï Very low miscibility with ammonia limiting oil thinning and reducing oil carry-over for an improved separator efficiency ï Wide operating temperature range due to stable viscosity index providing optimum viscosity in all compressor parts Typical properties* Mobil Gargoyle Arctic 68 NH Kinematic Viscosity at 40 °C, ASTM D 445, cSt Kinematic Viscosity at 100°C, ASTM D 445, cSt Viscosity Index, ASTM D 2270 (typical) Flash Point (COC), ASTM D 92, °C Evaporative Loss 3 hrs at 163°C, ASTM D 972 wt% Pour Point, ASTM D 5950, °C Brookfield Viscosity at-20°C, ASTM D 2983, cP Density at 15°C, ASTM D 4052, g/mL 68.6 9.32113248 0.94 -36 6020 0.8624 * Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification. Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations. The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit www.exxonmobil.com ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities. Mobil Gargoyle™ Arctic 68 NH ExxonMobil has developed Mobil Gargoyle Arctic 68 NH refrigeration oil, to be the new premium lubricant for ammonia refrigeration applications showing significantly higher performance compared to Mobil Gargoyle Arctic Oil 300 ammonia compressor oil. Viscosity Index Ammonia low miscibility Low-T Viscometrics Materials Volatility Compatibility Mobil Gargoyle Arctic 68 NH Mobil Gargoyle Arctic Oil 300 Application considerations: Mobil Gargoyle Arctic 68 NH oil is recommended for refrigeration systems for cylinder and bearing lubrication in conventional reciprocating and screw refrigeration compressors where ammonia refrigerant is used. This includes: 􀂃 Large industrial reciprocating and screw refrigeration compressors used in the food industry for food preparation and freezing 􀂃 Industrial applications such as food freezing and cold storage plants 􀂃 Marine refrigeration applications Viscosity @ 40 °C-KV 40 (cSt, ASTM D445) 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 MN (Mineral Naphthenic) MP 1 (Mineral Paraffinic) MP 2 (Mineral Paraffinic)

FAQs

What refrigeration systems is Mobil Gargoyle Arctic 68 NH intended for?

It is recommended for refrigeration systems using ammonia (NH3, R-717), for cylinder and bearing lubrication in conventional reciprocating and screw compressors.

How does the oil help at low operating temperatures?

Its low Brookfield viscosity supports good oil flow at low temperatures, helping reduce oil consumption and improve equipment life.

Why is ammonia miscibility important for this product?

Very low miscibility with ammonia helps limit oil thinning and reduce oil carry-over, contributing to improved oil separator efficiency.

Oct 6, 2026

Uploaded by Riley