What's the difference between CJ 4 and CK 4 oil?

“The primary difference in the two categories of heavy-duty oil is with backwards compatibility,” says Whitacre. “API CK-4 oils will support virtually all high-speed, four-stroke cycle diesel engines, including older engines that were using CJ-4, as well as new engines that are currently being developed.

Click to see full answer

Besides, what is a CJ 4 oil?

API Service Category CJ-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2007 model year on-highway exhaust emission standards as well as for previous model years. CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval.

Beside above, what's the difference between cj4 and ck4 oil? The new CK-4 oils will provide a number of improvements over CJ-4, including improved shear stability, oxidation resistance, and aeration control. API FA-4 oils will provide similar improvements over CJ-4 oils, but it is important to note that FA-4 oils are only intended for use in newer on-highway diesel engines.

Hereof, what does API CK 4 mean?

The API description states that FA4 refers to XW-30 oils meant for “select” diesel engines. Ones that comply with 2017 standards that govern on-highway greenhouse gas emissions. The oils must be appropriate for use on the highway with up to 15 ppm sulfur content in the diesel fuel.

Is CK 4 oil synthetic?

Yes, CK-4 engine oils will replace CJ-4 engine oils. There are two specifications; CK-4 and FA-4. You'll be able to buy the same viscosity grades and oil types (conventional, full synthetic, synthetic blend) you're using now, and they'll be completely “backwards compatible” to ALL current vehicles.

20 Related Question Answers Found

What is the best diesel oil?

Top 5 Best Diesel Engine Oil of 2020

Castrol EDGE Extended Performance 5W-30. Castrol is a name synonymous to quality and high-performance.
Valvoline 5W-40 Full Synthetic Diesel Engine Oil.
Royal Purple API-licensed Motor Oil SAE 15W-40.
Shell Rotella T4 Triple Protection 15W-40.
Mobil 1 120760 Synthetic Motor Oil 0W-40.

What is 5w 40 oil used for?

The 5w40 is crude-based motor oil that is best fit for diesel and gasoline engines. This motor oil is usually used for cars that are under warranty. Here are some important features of this category of oil: Suitable for vehicles that use unleaded and leaded gasoline.

What does the W stand for in oil?

The "w" in motor oil stands for winter. The first number in the oil classification refers to a cold weather viscosity. The lower this number is, the less viscous your oil will be at low temperatures. For example, a 5W- motor oil will flow better at lower temperatures than a 15W- motor oil.

What is API oil grade?

The service rating of passenger car and commercial automotive motor oils is classified by the American Petroleum Institute (API). The program certifies that an oil meets certain Original Equipment Manufacturer (OEM) quality and performance standards. It specifies the viscosity grade required for your car's engine.

What does 5w30 mean?

In a 5W-30 for example, the number before the W describes the viscosity of the oil at low temperatures. The lower the number, the thinner the oil and the better the oil's cold temperature/ cold start performance. The number after the W describes how thick the oil is at the engine's normal operating temperature.

What does CD mean in oil?

TOM: The "C" ratings are for diesel engines, so "CC" would be good, and "CD" would be better.

What is the highest API service rating for oil?

These identify that the oil meets the API's service standards, and will help keep you away from the lower quality oils. 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.

What is API CD?

API. The primary oil and natural gas trade association in the United States. Oils designed for this service have requirements for corrosion, piston deposits and soot handling. API has discontinued licensing diesel engine oils against API CD and it is considered to be a obsolete specification.

Is CK 4 backwards compatible?

CK-4 is designed for both over-the-road and heavy equipment and is also backward compatible.”

What is API used for?

An application program interface (API) is a set of routines, protocols, and tools for building software applications. Basically, an API specifies how software components should interact. Additionally, APIs are used when programming graphical user interface (GUI) components.

What is the latest API rating?

SN Rated Motor Oils

The latest service category rating for gasoline engines starting in 2011 model year cars and light trucks is "SN." The API SN rating is equivalent to the new GF-5 oil rating by the International Lubricant Standardization and Approval Committee (ILSAC).

What is fa4?

FA-4 is one of two new API donuts that started appearing on heavy-duty engine oil packaging late last year; the other being CK-4. Both CK-4 and FA-4 oils are formulated to improve resistance to aeration and to increase shear stability to ensure engines are protected from wear and tear.

Can I use API SN instead of API SF?

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.

What is the most recent diesel engine oil classification?

Diesel Engines

Category	Status
CK-4	Current
CJ-4	Current
CI-4	Current
CH-4	Current

What does SG mean in motor oil?

The letter combinations are performance ratings from the American Petroleum Institute, or API. When your van was manufactured, the top-of-the-line motor oil was rated SG, so that's what Ford called for.

Is Valvoline Premium Blue a synthetic blend?

Valvoline Premium Blue Oil. Valvoline™ Premium Blue™ is “The Only One”™ solely endorsed and suggested by Cummins. The Premium Blue brand offers a full lineup of conventional, synthetic blend, and synthetic engine oils developed for diesel, gas, and natural gas engine applications.