Zhengzhou and the Run Trading Company (www.stockman.com.cn) is located in Shenzhen, Guangdong, Garden Road, Zhengzhou City, the whole way to spend three and a half years of international apartment, Contact: Li Stockman (STOCKMAN) use the engine lubrication Group III base oils are divided into: Class I base oil production in the basic physical process based, does not change the hydrocarbon structure, to base oils is limited in performance. Group II base oil through a combination of process (solvent refined and hydrogenation technology combined) system, you can change the original structure of hydrocarbons, II, fewer base oils magazine (aromatics content of less than 10%) higher content of saturated hydrocarbons, thermal stability and better low-temperature oxidation and soot dispersion properties are better than I base oils. Class III is a full hydrogenation process in the system, compared to Class II fuel additives, high-viscosity base oil hydrogenation, also called unconventional base oil additives, III base oils on the performance far exceeds I, II Basics oils, especially those with high viscosity index, low volatility, oil heat, oxidation stability, low sulfur / sulfur-free, low viscosity and other characteristics. Selection of high quality Group III base oil is one of the important reasons Stockman (STOCKMAN) outstanding performance lubricants. Assess the quality of the three test lubricants more critical, as a comprehensive evaluation of the quality standard lubricants, the world has been basically consistent trend established lubricant physical and chemical indicators, simulation and bench test, road test and other quality standards, consisting of four parts of the basic system. Physical indicators are based lubricant additives, lubricants basic performance as a measure of physical and chemical indicators include: Kinematic viscosity, low dynamic viscosity, viscosity index, flash point, pour point, sediment, water, foam resistance, residual carbon, medium and values sulfated ash content and a variety of elements, and so on. These basic indicators to measure the physical and chemical indicators only lubricant, even if the physical and chemical indicators are substandard, the simulation test bench behind and going. Simulation test is the preferred method of assessment, the first simulation test gasoline additive useful to you, in the research and development of oil in the process, technicians discovered oil physical and chemical indicators can not explain the problem also does not reflect the use of mechanical friction is good with the main trial has the following components: reflecting automotive lubricants clean dispersion and oxidation of coke plate heat pipe test methods and test methods; reflect vehicle test methods and multi-metal oxide film lubricants under high temperature oxidation oxidation test method; test methods reflect the car spot sludge dispersion capability lubricants; vehicle lubricants reflect the level of anti-wear high-temperature four-ball machine wear test methods. These simulations can simply reflect the work of the engine can not be simulated in particular for the combustion performance of the engine oil in complex situations and working conditions.