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ASTM STP 1143 Low Temperature Lubricant Rheology Measurement and Relevance to Engine Operation

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Rhodes, RB

This publication contains papers presented at the Low Temperature Lubricant Rheology Measurement and Relevance to Engine Operation symposium. The symposium was sponsored by ASTM Committee D-2 on Petroleum Products and Lubricants and its Subcommittee D02.07 on Lubricant Flow Properties in December, 1991.

The symposium was undertaken to accomplish three things.

1. Offer a chronology of developments regarding the low-temperature rheological techniques and specifications that apply to the low-temperature cranking and pumping characteristics of engine oils.
2. Focus on the technological changes that have occurred since the completion of the last round of low-temperature engine and bench test studies. 
3. Bring to light new information that would help determine whether the cranking, starting, and pumping needs of present-day engines are adequately served.

Specific topics addressed by papers in this collection include:

• historical perspective
• test methods
• oil rheology
• engine oil
• borderline pumping temperature
• gasoline engines
• critical oiling locations
• cold cranking
• startability
• diesel engine
• cold cranking simulator
• SAE J300
• shear stress
• shear rate
• viscosity
• differential scanning calorimetry
• GC-simulated distillation
• Brookfield viscometer
• Ravenfield CS viscometer
• basestock manufacture
• dewaxing
• pumpability
• refinery unit operations
• wax compositions
• pour point