Home / Standards / GB/T 9933-1988 GB/T 9933-1988 Active The test method for evaluating the performance of internal combustion engine oil (Caterpillar 1G2 method) 内燃机油性能评定法 (开特皮勒1G2法) Standard Type GBT ICS 75.100 CCS E34 Status 现行 Issue Date 1988-09-20 Implementation 1989-09-01 Responsible Dept 国家标准委 Drafting Unit N/A