GB/T 8028-2010 Criteria for changing of gasoline engine oil

GB/T 8028-1994 Criteria for changing crank case oil of gasoline automobile

SH/T 0077 ASTM D 6595 GB/T 260-2016 Test method for water in petroleum products—Distillation method GB/T 261-1983 Petroleum products—Determination of flash point—Closed cup method GB/T 261-2008 Determination of flash point—Pensky-Martens closed cup method GB/T 261-2021 Determination of flash point—Pensky-Martens closed cup method GB/T 265-1988 Petroleum products—Determination of kinematic viscosity and calculation of dynamic viscosity GB/T 7304-2000 Petroleum products and lubricants—Determination of acid number—Potentiometric titration method GB/T 7304-2014 Standard test method for acid number of petroleum products by potentiometric titration GB/T 8926-2012 Standard test method for insolubles in used lubricating oils GB/T 11137-1989 Black petroleum products—Determination of kinematic viscosity (reverse-flow method)and calculation of dynamic viscosity GB/T 17476-1998 Standard test method for determination of additive elements,wear metals,and contaminants in used lubricanting oils and determination of selected elements in base oils by inductively coupled plasma atomic emission spectrometry(ICP-AES) GB/T 17476-2023 Determination of multielements of lubricating oils and base oils—Inductively coupled plasma atomic emission spectrometry(ICP-AES) SH/T 0474-2000 Standard test method for gasoline diluent in used gasoline engine oils by gas chromatography SH/T 0251-1992 Oil product alkalinity determination method (perchloric acid titration method) SH/T 0474-1992 The method for determining the dilution ratio of gasoline in gasoline engine oil using gas chromatography. (English translation only)