What is sj oil rating

So how do your recognize and avoid the use of motor oils that can harm your engine? It's important to note that whereas this story is about what engine oils not to use for your car, always consult your owner's manual to determine what motor oil you should use. The Petroleum Quality Institute of America's mission is to serve the consumer of lubricants by testing and reporting on the quality and integrity of lubricants in the marketplace.

It is expected that this improved visibility of quality will lead to wider conformance by lubricant manufacturers to specification and performance claims. Oil Categories. Name Status Service GF-6A Current Introduced in May , designed to provide protection against low-speed pre-ignition LSPI , timing chain wear protection, improved high temperature deposit protection for pistons and turbochargers, more stringent sludge and varnish control, improved fuel economy, enhanced emission control system protection and protection of engines operating on ethanol-containing fuels up to E Introduced in May , designed to provide protection against low-speed pre-ignition LSPI , timing chain wear protection, high temperature deposit protection for pistons and turbochargers, stringent sludge and varnish control, improved fuel economy, emission control system protection and protection of engines operating on ethanol-containing fuels up to E Category Status Service SP Current Introduced in May , designed to provide protection against low-speed pre-ignition LSPI , timing chain wear protection, improved high temperature deposit protection for pistons and turbochargers, and more stringent sludge and varnish control.

SL Current For and older automotive engines. SJ Current For and older automotive engines. May not provide adequate protection against build-up of engine sludge, oxidation, or wear. May not provide adequate protection against build-up of engine sludge. Use in more modern engines may cause unsatisfactory performance or equipment harm. Not suitable for use in most gasoline-powered automotive engines built after Use in modern engines may cause unsatisfactory performance or equipment harm.

These oils are formulated for use in all applications with diesel fuels ranging in sulfur content up to ppm 0. However, the use of these oils with greater than 15 ppm 0. API CK-4 oils are designed to provide enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase.

There are two categories: gasoline and diesel. For both, the letter S or C is followed by another letter. For example, SM or CF. The higher the letter, the more recent the technology of the oil. For recent oil, the higher specification will supersede the lower letter grade. However, you have to pay attention to the year of construction of the engine. If the engine is too old, modern chemistry might not be adapted or compatible with old engine designs and materials used to make the engine.

Below are all the API categories in Gasoline. SH Obsolete For model year and older engines. SG Obsolete For model year and older engines. SF Obsolete For model year and older engines. SE Obsolete For model year and older engines.

SD Obsolete For model year and older engines. SC Obsolete For model year and older engines. SB Obsolete For older engines. Use only when specifically recommended by the manufacturer. SA Obsolete For older engines; no performance requirement. These oils are formulated for use in on-highway applications with diesel fuel sulfur content up to 15 ppm 0.

These oils are blended to a high temperature high shear HTHS viscosity range of 2. These oils are especially effective at sustaining emission control system durability where particulate filters and other advanced aftertreatment systems are used. API FA-4 oils are designed to provide enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase.

API FA-4 oils are not recommended for use with fuels having greater than 15 ppm sulfur. For fuels with sulfur content greater than 15 ppm, refer to engine manufacturer recommendations. These oils are formulated for use in all applications with diesel fuels ranging in sulfur content up to ppm 0. However, the use of these oils with greater than 15 ppm 0.

API CK-4 oils are designed to provide enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase.

When using CK-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval recommendations.