The api engine oil licensing and certification system provides a simple. Products complied with api standards are always thought of reliable quality. Group 1 is for all tubing in grades h40, j55, and n80. Api publications necessarily address problems of a general nature. Developing new diesel oil performance standards for api c service categories. At some point in time the oil companies came out with an additive containing additional antiwear.
Whereas the labeling on the bottle of engine oil may suggest the product is a 5w30, note, if there is no w between the 5 and the 30 it may not be a 5w30. American petroleum institutes motor oil guidepdf document. Specification overview heavy duty diesel and passenger car engine oils. Later api diesel engine oil service classifications, such as api ch4, ci4, cj4 and the recently introduced ck4, were developed with a focus on the requirements of exhaust gas recirculation egr, pdf and catalyst systems in engines introduced from the early 2000s. Page 2 of 6 table q7ilsac gf6b passenger car engine oil standard. The american petroleum institute api announced that it has approved two new diesel engine oil standards, api service categories ck4 and fa4. These products have been produced with newest technologies available in order to provide excellent performance in all fourstroke cycle diesel engines. An api of 10 is equivalent to water, which means any oil with an api above 10 will float on water while any with an api below 10 will sink. Multigrades engine oil is used today for all seasons, in the past they car owners used engine oil in. Its a versatile product which can be used in a wide variety range of heavy duty, commercial vehicles and pick. Each crude oil reservoir and stream has unique properties and characteristics.
Some small trucks and cars also have diesel engines. The american petroleum institute gravity, or api gravity, is a measure of how heavy or light a petroleum liquid is compared to water. Helps extend diesel engine life find the right oil for your engine. A partial listing of the worlds crude oils is listed. Viscosity grades are limited to sae 0w16 multigrade oils astm d53 12 max to be evaluated from 5. Api engine oil classification petroleum quality institute of america.
This api category introduced in 1994 is intended for offroad diesel engines using. The api s series describes oil standards primarily for gasoline engines while the api c series describes oil standards for diesel engine service. In general it is achieved by treatment with additives that change the low temperature characteristics of the fuel. Optimization of different grades engine oil viscosity. These products also meet the performance standards of api cf and api sl. Fa4, current, api service category fa4 describes certain. Astm diesel fuel oils standard specification ansi blog. During the development process, the new categories were known as pc11 proposed category 11. Trends and prospects, american petroleum institute research study no. S petrol and c diesel, most oils carry both petrol s and diesel c specifications 11. Sae j300 gelation index oils shall meet all requirements of sae j300. Api fa4 oils are not interchangeable or backward compatible with api ck4, cj4, ci4 plus, ci4, and ch4 oils. The petroleum industry often names crude based on the oils geographical source, for example, west texas intermediate. Oil classification systems have been also in place in the eu and japan.
An oil displaying this mark meets the current engine protection standard and fuel economy. Oreilly heavy duty single grades are premium quality, heavy duty crankcase oils. Technical paper discussing the api engine lubricating oil service categories. A description of the api service symbol and category mark can be found in the engine oil guide published by the api 1875. Engines charts on the next pages for descriptions of current and obsolete api service categories. Api guidelines for sae viscositygrade engine testing.
Oils displaying these marks meet performance requirements set by u. Lower american petroleum institute api ratings indicate heavier fuel containing greater. Api fa4 and the fa4 donut identify certain xw30 oils specifically formulated for use in select highspeed fourstroke cycle diesel engines designed to meet 2017 model year onhighway greenhouse gas ghg emission standards. Diesel fuel is graded and designated by the american society for testing and materials astm, while its specific gravity and high and low heat values are listed by the american petroleum institute api. Api organized these tubing grades into three groups. Api this standard for passenger cars, two categories. Diesel engine oil categoriesfor heavyduty trucks and vehicles with diesel engines. Motorcraft diesel motor oil specially formulated for use in 6.
This service oils are suitable for high speed, fourstroke diesel engines designed to meet 1998 exhaust emission standards and are specifically compounded for use with diesel fuels ranging in sulfur content up to 0. Each individual oil refiner and supplier attempts to. Qorm platinum super sae 15w40 api ci4 is a super high performance long drain diesel engine oil meeting the latest api ci4 standard available in a shear stable viscosity grade. Cj4 current for highspeed fourstroke cycle diesel engines designed to meet 2010 model year onhighway and tier 4 nonroad exhaust emission standards as well as for previous model year diesel engines. Crude oil is also classified based on physical characteristics and chemical composition, and these qualities are described with terms such as sweet, sour, light, and heavy. The higher the cetane number, the more volatile the fuel. Each individual oil refiner and supplier attempts to produce diesel fuels that comply as closely as possible with. This lubricant has been developed as a long life oil meeting mercedes benz 228. It specifies the viscosity grade required for your cars engine. Oils designed for dieselengine service fall under apis c. Powered by a fuel that was considered an unwanted byproduct or distillate of crude oil refining for decades prior, the new engine burned fuel at a lower rate, making better use of the. See reverse for descriptions of current and obsolete api service categories. Api gravity moves inversely to density, which means the denser an oil is, the lower its api gravity will be. Selection of the right motor oil for the corvair and other.
Winter diesel fuel also known as winter diesel, alpine diesel, or winterized diesel ae refers to diesel fuel enhanced to prevent it from gelling in cold weather conditions. Crude oil testing and assay services provided by intertek support customers from the wellhead to the refinery across the world. Api steel grades for tubing and casing api standards for casing and tubing. These oils are formulated for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm 0. Selection of the right motor oil for the corvair and other engines 27112019 page 1 of 34 selection of the right motor oil for the corvair and other engines. Most diesel vehicles use fuel with a rating of 40 to 55.
Diesel fuel is also used in diesel engine generators to generate electricity, such as in remote villages in alaska, among other locations. Standard diesel fuel sometimes called diesel oil comes in two grades. Api, shorted for american petroleum institute, is considered as one of the most authoritative and comprehensive principles for oil and gas industry. The operators handbook for a modern diesel engine will specify a diesel engine oil meeting industry classifications such as api cj4 or acea e4e6e7e9, maybe a manufacturers specification such as cat ecf3, mb. The api grade letter designation was selected arbitrarily to provide a unique name for various steels.
Diesel fuel is used in the diesel engines found in most freight and delivery trucks, trains, buses, boats, and farm, construction, and military vehicles. En gine oil guide apis service symbol and certification mark identify quality engine oils for gasolineand dieselpowered vehicles. Group 3 is for highstrength tubing in seamless grade p110. Diesel engine oil grades check the manufacturers recommendations. Api fa4 diesel oil can be found in 5w30 and 10w30 diesel viscosity grades. Appendix fapi guidelines for sae viscositygrade engine. Group 2 is for restrictedyield tubing grades l80, c90, and t95. Various grades of diesel fuels are established in astm d97519c. Ch4 oils are superior in performance to those meeting api cf4 and api cg4 and can effectively lubricate engines. The ilsac standards, denoted by the terminology ilsac gfx, are based upon the api service categories and bring additional performance requirements, for example fuel economy improvement, and restrictions in the viscosity grades that may claim to meet an ilsac standard. Transit connect diesel motor oil the new lowviscosity diesel motor oil, for use in the 3. Guide to sae viscosity grades of motor oil for passenger cars apis service symbol and certification mark identify quality engine oils for gasoline and dieselpowered vehicles.
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