amendment to the mexican official standard nom-116-scfi-1997 automotive industry - lubricating oils for petrol or diesel engines - commercial information. 5 pages in spanish . first the following additions are being made to the mexican official standard nom-116-scfi-1997 automotive industry lubricating oils for petrol or diesel engines commercial information a second paragraph to chapter 1 objective and area of application an initial paragraph to chapter 3 definitions the paragraphs 3.7 3.8 and 3.9 the subparagraphs iii and iv of section e of paragraph 4.2.1 the subparagraph iv of section e of paragraph 4.2.2 and a chapter 4bis. the standard will therefore appear as follows 1. objective and area of application . this mexican official standard does not apply to two-stroke petrol engines. 3. definitions the following definitions have been established for the purposes of the application of this mexican official standard 3.1 3.6. 6. description of content contd 3.7 obsolete obsolete indicates that the category refered to is no longer approved by api- american petroleum institute- and that its acronym cannot appear on the trademark service symbol. 3.8 approval this indicates compliance with the quality requirements established by api american petroleum institute. 3.9 generic name this can be lubricating oil for petrol engines lubricating oil for diesel engines lubricating oil for the petrol engine lubricating oil for the diesel engine oil for petrol engines oil for diesel engines oil for the petrol engine and oil for the diesel engine. 4.2.1 language and terminology a e i and ii iii service category for petrol or diesel engines as indicated in tables 1 and 2 or in conformity with the manufacturers own classification specifying its formulation iv level of viscosity 4.2.2 a e i recommended usage in accordance with tables 1 and 2 or the manufacturers own classification specifying its formulation ii indicating approval is optional based on the information in tables 1 and 2. f and g 4bis. conformity assessment the conformity assessment of this mexican official standard will be carried out by accredited and authorized persons in accordance with the provisions of the federal law on metrology and standardization and its regulations . second modifications are being made to table 1 and table 2 of the mexican official standard nom-116-scfi-1997 automotive industry lubricating oils for petrol or diesel engines commercial information and they will therefore appear as follows 6. description of content contd table 1 service classification system for lubricating oils for petrol engines s service oils service categories for petrol engines approval recommended usage sa approval obsolete obsolete oil of this category must not be used in any engine unless specifically recommended by the manufacturer sb approval obsolete obsolete oil of this category must not be used in any engine unless specifically recommended by the manufacturer sc approval obsolete obsolete oil of this category must not be used in any engine unless specifically recommended by the manufacturer sd approval obsolete obsolete oil of this category must not be used in any engine unless specifically recommended by the manufacturer se approval obsolete obsolete oil of this category must not be used in any engine unless specifically recommended by the manufacturer sf obsolete recommended for use in petrol engines of 1988 vehicles and those of years prior to 1988. sg obsolete recommended for use in petrol engines of 1993 vehicles and those of years prior to 1993. sh obsolete recommended for use in petrol engines of 1996 vehicles and those of years prior to 1996. sj valid recommended for use in petrol engines of 2001 vehicles and those of years prior to 2001. sl valid recommended for use in petrol engines of the most recent vehicle models and those of previous years