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Jun 8, 2014 · 机油的基础油（二）上一篇其实说的不够深入，现在来第二篇，重点介绍几个概念，在机油坛子混，必须知道的几个名词一、VHVI = (VeryHighViscosityIndex),中文是“很高的黏度指数”的意思；VI是粘度指数的意思，一般值在120~140。
PURITY VHVI Specialty Base Fluids are an excellent alternative to more expensive PAOs and Group III+ base oils. They allow you to consistently blend and compound formulations meeting increasingly technical demands of ...
AISIN has developed a series of superior performance synthetic-based engine oil products by VHVI synthetic base oil. This results in excellent soot handling and better oxidation stability, preventing the formation of ...
由于VHVI是否是合成油存在很大争议，再加上VHVI的价格只有PAO的50%左右，所以，很多厂家都喜欢用VHVI用做合成油，这就意味着同样是合成油，区别也是蛮大的。 一般来说，市场上主流的全合成润滑油分为PAO型合成油，XHVI型合成油，酯类合成油。
Details: VHVI-4 base oil is a very high viscosity index (VHVI) synthetic or severely hydrocracked mineral oil with low viscosity, used in premium lubricants and hydraulic fluids.
吉克®X8星护5W-30全合成发动机油采用SK VHVI技术的YUBASE®全合成基础油。 作为吉克家族先进全合成产品，具有优异的清洁和抗磨性能，在多种苛刻工况下降低发动机磨损并减少沉积物的生成，提升燃油经济性，为其提供可靠保护。
PURITYTM VHVI’s excellent low temperature properties and low volatility allow for the formulation of challenging multi-grades, such as SAE 0W-20, without the use of PAO in a wide range of additive packages
