What does API CJ-4 mean?

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. Oil Interchangeability Guidelines and the API Guidelines for SAE Viscosity-Grade Engine Testing.

Is SAE 30 Good for diesel engines?

SAE 30 Motor Oil is recommended for use in older two- and four-stroke diesel engines where the SAE 30 engine oil is specified by the OEM. Protection against rust, corrosion, varnish, and sludge — Helps keep oil screens, filters, and rings clean and free for prolonged periods.

What is API CJ?

API Service Category CJ-4 is the primary performance category for high-speed, four-stroke diesel engines designed to meet 2010 model year on-highway and Tier 4 non-road exhaust emission standards, as well as for previous model year diesel engines.

Is 10W30 Good for diesel?

In a commercial fleet with good fuel economy, going to a 10W-30 CK oil is a good move for fuel economy. If you’re more concerned about your engine durability, and you run engines to the very end of their useful life, and a couple percentage points of fuel economy is not that attractive, then you may choose 15W-40.

Is CK 4 better than CJ4?

API CK-4 oils will replace current API CJ-4 engine oils and will be backward compatible with most applications where engine manufacturers currently recommend CJ-4. The new CK-4 oils will provide a number of improvements over CJ-4, including improved shear stability, oxidation resistance, and aeration control.

Is CK4 better than CJ4?

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.

Can I use API SN instead of API SL?

For example, if we have an oil with specification SN, it can also be used for vehicles which request API SM, SL and SJ; it is backward compatible. However, you have to pay attention to the year of construction of the engine.

Can I replace 15w40 with 0w40?

0w40 has a large viscosity spread, 15w40 does not. That’s why 15w40 has always been a proven oil in HD applications. You’re subtracting the difference between the two numbers. The larger the difference, the more viscosity improvers are used for a given oil type that can/will shear.

When is API CJ-4 heavy duty oil transition?

API CJ-4 to CK-4 Heavy Duty Engine Oil Transition In August 2016, KLONDIKE Lubricants Corp. announced in a blog post, details on the upcoming transition in heavy duty engine oil specification. The transition relates to the new service categories launched by the American Petroleum Institute (API) called CK-4 and FA-4.

When did CJ-4 become mandatory for heavy duty engines?

This standard was launched in 2006, and made mandatory as factory and service fill for all heavy duty on-road engines in North America effective 2007 model year. The CJ-4 standard has been very successful in what it was designed to do and has been the go-to fluid technology for heavy duty engines for almost 10 years.

What kind of oil is Klondike CJ-4 heavy duty?

KLONDIKE CJ-4 to CK-4 Heavy Duty Engine Oil Transition. What we do know is that API CK-4 fluid technology presents a natural and beneficial transition from CJ-4 and that the heavy duty market is embracing this change. KLONDIKE Lubricants Corp. is transitioning all its current CJ-4 products to CK-4 technology as a running change over.

What’s the difference between API CJ-4 and CK-4?

And while the goals of the different categories are alike, they are different in the way they accomplish the overall outcome. API CK-4 is designed as a direct successor and replacement for the incumbent CJ-4 fluid technology. API CK-4 fluids are fully backwards compatible and supersede CJ-4 and previous service categories.