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Group II/II+ EHC™ base stocks

We are committed to investing in Group II/II+ products through projects such as the expansion of our Baytown refinery, construction of our Group II/II+ facility in Rotterdam and the recently completed Singapore base stocks refinery expansion that brings enhanced-performance EHC™ base stocks to Asia Pacific. In April 2019, a further multibillion-dollar expansion of the integrated manufacturing complex in Singapore was announced, with start-up anticipated in 2025. These investments allow us to offer formulation and supply-chain flexibility around the world.

EHC™ base stocks are part of a global Group II/II+ slate as defined within API/ATIEL guidelines for formulation and qualification of automotive and engine oil lubricants. With base oil interchange and viscosity grade read-across capabilities, EHC base stocks offer broad coverage that enables supply chain flexibility and simplified qualification testing requirements.

EHC base stocks may also be used in industrial and other applications where formulations benefit from increased oxidation stability and higher viscosity index (VI). Our rigorous processes ensure reliable delivery of consistent quality base stocks.

Key benefits

Consistent quality to help formulators produce high-performance blends that:

  • Meet or exceed industry requirements
  • Achieve optimum additive solubility and oxidation stability
  • Meet or exceed engine oil quality requirements
  • Offer cost savings through blending optimizations
Quote from Emarat, "ExxonMobil Basestocks has been a trusted partner.".

* This testimonial is based on the experience of a single customer. Actual results can vary depending upon the type of equipment used and its maintenance, operating conditions and environment, and any prior base stock used.

Sales specifications EHC™ 45 EHC™ 50 EHC™ 65 EHC™ 110 EHC™ 120 EHC™ 340 MAX
Property Limits Standard method (a)



Clear and Bright

Clear and Bright Clear and Bright Clear and Bright Clear and Bright Clear and Bright
ASTM Color Max ASTM D1500 L0.5 0.5 L0.5 0.5 0.5 L1.5
CCS viscosity -25ºC mPa•sec Max ASTM D5293 1550      
CCS viscosity -20ºC mPa•sec Max ASTM D5293   1550 3100  
Flash Point, COC Deg C Min ASTM D92 204 210 214 230 255 294
Kinematic viscosity @ 100ºC mm2/sec Min-Max ASTM D445 4.4-4.7 5.2-5.6 6.3-6.6 10.0-12.0 11.7-12.5 32.5-35.5
Kinematic viscosity @ 40 degrees C mm2/sec Min-Max ASTM D445 96-108 460-520
NOACK Volatility, wt% Max ASTM D5800-Method B 14.5 13.5 10  
Pour Point, COC degrees C Max ASTM D97 -18 -18 -18 -15 -15 -15
Viscosity Index Max ASTM D2270 113-119 110-119 103-119 95-110 102-115 95-115
Saturates, wt% Max ASTM D7419 98
Availability     EHC™ 45 EHC™ 50 EHC™ 65 EHC™ 110 EHC™ 120
Americas     *   *   * Coming 2025
Europe, Africa, Middle East       *   * Coming 2025
Asia/Pacific       *   * Coming 2025 Coming 2025

Our products are designed to meet the industry’s evolving specification requirements, providing quality you can rely on today and tomorrow.

(a) In lieu of standard test method, alternate test methods may be used for the certification of a product property.

Note 1: Products are certified on release to meet the values specified. Actual values may deviate within the established reproducibility of the test method specified.

Note 2: For purpose of determining conformance with specification, observed or calculated values shall be rounded off to the nearest unit in the last significant digit used in expressing the limiting value in accordance to the ASTM E 29 method

Health and Safety

Detailed health and safety information for this product is provided in the material safety data sheet (MSDS), available upon request through your local sales representative or from www.ExxonMobil.com

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