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The API’s current highest rating for motor oil is SM. This oil is intended for all gasoline engines currently in use and has been the standard since 2004. For diesel engines, the current top oil rating is CI-4.
What is the highest API?
Generally speaking, oil with an API gravity between 40 and 45° commands the highest prices. Above 45°, the molecular chains become shorter and less valuable to refineries. Crude oil is classified as light, medium, or heavy according to its measured API gravity.
What is the highest rating of an oil to date?
Historically, Crude oil reached an all time high of 147.27 in July of 2008. Crude oil – data, forecasts, historical chart – was last updated on February of 2022.
What are the API oil ratings?
The service rating of passenger car and commercial automotive motor oils is classified by the American Petroleum Institute (API). It specifies the viscosity grade required for your car’s engine. Today, the most common grades are 5W-30 and 10W-30.
Is API sp better than SJ?
As explained earlier, the higher the letter, the more recent and a higher specification would supersede the lower ones. API SN to SJ are for the most recent cars, API SH to SA for the older cars.
What is API SL oil?
SL. 2001 Gasoline Engine Service. Category SL was adopted to describe engine oils for use in 2001. It is for use in service typical of gasoline engines in present and earlier passenger cars, sports utility vehicles, vans and light trucks operating under vehicle manufacturers recommended maintenance procedures.
What is API premium oil?
Premium multi–Grade Gasoline Engine Oil is formulated with highly refined base stocks and selected DI Packages which provides excellent wear control.
Is API SN higher than SG?
SN oils provide higher levels of performance than all the other “S” oils. All Ultra multigrade gasoline engine oils meet the highest API specification (API SN), these oils have been tested and proven to provide the optimum protection and performance for today’s modern engines.
Is API sp better than API SN?
GF-6B oils replace 0W-16 oils. API SP replaces all API SN. This includes a timing chain wear test and fuel economy improvement test when using very low viscosity oils, among other tests.
Can I use API SP instead of API SL?
API SP will be fully backward-compatible with previous API service categories, including API SN PLUS, SN, SM, SL or SJ.
Is higher API oil better?
Higher API indicates a lighter (lower density) crude. Lower API indicates a heavier (more dense) crude. Generally, lighter (high API) crudes are more valuable because they yield more high-value light products when run through a refinery. Anything below 15 API would be considered an extra-heavy crude.
Can I use API SL instead of SG?
Is it safe to use an API SL oil engine instead of SG? – Quora. All later oils are compatible with earlier ones. SL is thus completely compatible with the 1989 SG rating.
What is 15w40 oil used for?
ADVANTAGE 15W-40 HEAVY DUTY DIESEL ENGINE OIL can be used with complete success in over-the-road diesel trucks, off-highway diesel equipment, farm tractors, and passenger cars and light trucks with diesel, turbo-charged diesel engines, or gasoline engines and is backward compatible with previous API Oil Categories.
What is higher than API SG?
As explained earlier, the higher the letter, the more recent and a higher specification would supersede the lower ones. API SN to SJ are for the most recent cars, API SH to SA for the older cars. In this case, you need API SL, so an API SJ, lower, cannot be good. SM and SN supersedes SL so both oils can be used.
Is SN better than SM?
The API SN category is an improvement over the API SM category in the following areas: High temperature deposit protection for pistons. Better sludge control. Better seal compatibility.
What is 10W 30 API SJ?
The 10W30 designation on engine oil means that the viscosity of the oil is rated at 10W when an engine is cold and 30 when the engine is hot. This is different than an oil labelled 5W30, which has a thinner viscosity when the engine is cold at 5W.
What is API CG 4 oil?
API CG-4 was introduced in 1995 for severe duty, high-speed, four-stroke diesel engines used in both on-highway (0.05% wt sulfur fuel) and off-highway (less than 0.5% wt sulfur fuel) applications. API discontinued licensing diesel engine oils against Service Category CG-4 on August 31, 2009.
What is JASO MA oil?
JASO MA: This is the standard specification for oils that are used within one oil system (where the engine, gearbox and clutch use the same oil). These oils are suitable for use in motorcycles that have catalytic converters in the exhaust system. JASO MB: This is a lower standard specification for scooter engines.
What is CC grade oil?
CC — Diesel Engine Service Oils designed for this service provide protection from high-temperature deposits and bearing corrosion in these diesel engines and also from rust, corrosion and low-temperature deposits in gasoline engines. These oils were introduced in 1961.
What is the difference between CJ 4 and CK 4?
The new oils provide better oxidative stability, more aeration resistance, and enhanced shear stability. Additionally, CK4 oils provide better protection for engines than CJ4 oils. Using CK4 should increase the time between oil changes and improve fuel economy, as well, thanks to lower viscosity grades.
