• Corpus ID: 14716479

Influence of Group II & III base oil : Composition on VI and oxidation stability

  title={Influence of Group II \& III base oil : Composition on VI and oxidation stability},
  author={David C. Kramer and James. Ziemer and Ming Cheng and Charles E. Fry and R. Norman Reynolds and B. K. Lok and Mark L. Sztenderowicz and Russell R. Krug},
  journal={NLGI spokesman},
The purpose of this study is to describe the application of HPLC and NMR analyses for aromatics characterization coupled with FIMS for saturates characterization of commercial Group II and III base oils and use this information to relate their compositional properties to oxidation stability. 

Study on the Effect of Hydrogenated Lubricant Base Oil Composition to Its Oxidation Stability

In this paper, we studied the high temperature oxidation stability of hydrogenated lubricant base oils used in automobile engine oil formations. Different oil from Daqing, Lanzhou and Kelamayi were

The response to antioxidants in base oils of different degrees of refining

Base oils with different compositions and different degrees of refining have been subjected to three types of oxidation stability tests in the presence of antioxidants. A higher degree of refining of

Effect of Temperature on the Composition of a Synthetic Hydrocarbon Aviation Lubricating Oil

The CA analysis results for the oil compounds at the molecular level were in good agreement with observed changes in the physicochemical properties at the macro level, and at elevated TT temperatures (>250 °C), the properties were observed to dramatically degrade.

Viscometric and Low Temperature Behavior of Lubricants with Blended VI Improvers

Polymeric viscosity index improvers (VII) are routinely used to modify oils to the proper viscosity and VI for an application. There are many commercially available polymer chemistries (PMA, PB, OCP

An Automated Method for Chemical Composition Analysis of Lubricant Base Oils by Using Atmospheric Pressure Chemical Ionization Mass Spectrometry

The reproducibility of the method was assessed by determining within-day and between-day precisions and total precision for hydrocarbon class distributions measured for three different base oils were found to be better than 6.2%, suggesting that the automated (+)APCI/O2/isooctane method is reproducible and robust.

Identification and Quantitation of Linear Alkanes in Lubricant Base Oils by Using GC×GC/EI TOF Mass Spectrometry

GC×GC/EI TOF MS can be used to both identify and quantitate linear alkanes, and the n-alkane content in both base oil samples was further validated using a GC–GC/FID method (the gold standard for quantitation), which provided nearly identical results.

351-366 INGLESE

  • Chemistry
  • 2007
In this case, the purpose of the vacuum unit is to prepare the feedstocks for subsequent treatments by removing heavier hydrocarbons, resins and asphaltenes, which are incompatible with the

Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry of Friction Modifier Additives Analyzed Directly from Base Oil Solutions

This work shows a method to directly analyze friction modifier additives used in the automotive industry from an oil blend via the use of AP-MALDI without any further separation steps, which will further simplify the acquisition of data on lubricant composition and additives.

The Evolution of Base Oil Technology

From its humble beginnings over 3000 years ago, lubrication technology has seen many phases of evolution. As it continues to evolve at an ever-increasing rate, base oil performance is making a larger



Impact of base oil changes on grease performance

Base oil evaluation entailed manufacturing 15 fully formulated simple lithium greases samples by keeping base oil viscosity constant but varying base oil V.I. and aromaticity. Two grease types were

Comparison of Biological and Chemical Predictors of Dermal Carcinogenicity of Petroleum Oils

Abstract. Various methods have been proposed as a basis for cancer hazard labelling of petroleum products. The Institute of Petroleum analytical method termed IP 346/80 was recently recommended to

Institute of Petroleum, Methods for Analysis and Testing

  • Institute of Petroleum, Methods for Analysis and Testing
  • 1985

American Petroleum Institute Research Project 42, API Proceedings

  • American Petroleum Institute Research Project 42, API Proceedings
  • 1946