Pilot Petrochemical’s Answers to Questions Regarding API CJ‑4
Release Date:
2012-06-01
Author:
Source:
Abstract
Since the launch of the Yinhang Jianbing Super‑Power API CJ‑4 top‑grade synthetic diesel engine oil, market response has been exceptionally strong. In response to the many questions our customers have raised, we’ve provided clear answers below.
◆Why is the API CJ-4 standard necessary?
New emission standards for heavy-duty engines have officially come into effect. Engines that meet these standards are equipped with advanced emissions-control technologies, including diesel particulate filters (DPFs) and exhaust gas recirculation (EGR) systems. The API CJ-4 specification addresses both this new requirement and the transitional needs of older‑model engines.
◆Has the API CJ-4 standard been endorsed and recommended by engine manufacturers?
Yes. API CJ‑4 grade engine oil is designed for engines running on ultra‑low sulfur diesel (ULSD) and has undergone rigorous testing, fully meeting the performance and drain‑interval requirements of OEMs and end users.
◆ How does API CJ-4‑grade oil differ from earlier grades?
The additive system of API CJ‑4 engine oil has been specially formulated to meet the demanding operating requirements of modern engines while also protecting advanced emission‑control systems such as DPFs. Compared with earlier oil grades, the CJ‑4 formulation delivers significant improvements in wear control, deposit control, fuel economy, shear stability, low‑temperature pumpability, and thermal‑oxidative stability.
◆What changes have been made to the oil drain interval for API CJ-4 lubricants?
The recommended oil-change interval for a specific type of lubricant is closely dependent on the engine type, operating load, fuel type, and other factors. The exact oil-change schedule should follow the manufacturer’s recommendations for both the engine and the equipment.
◆ Can API CJ-4 oil protect older‑model engines as effectively as API CI‑4 oil?
Yes. API CJ‑4 lubricants are compatible with both new‑generation engines and existing older‑model engines. API CJ‑4 oils must pass several new engine‑simulation tests that were not required under previous standards. Oils meeting the API CJ‑4 specification deliver significantly enhanced performance: in addition to providing superior protection for emission‑control systems and complying with emission regulations, they further reduce engine wear, control piston deposits, and lower fuel consumption.
◆Is API CJ-4 engine oil suitable for off-highway vehicles (e.g., field‑operation vehicles and stationary equipment such as generator sets)?
Suitable. If users need to operate in the aforementioned off‑highway vehicles, which typically run on high‑sulfur diesel, Pilots recommends using CJ‑4‑grade Vanguard Ultra‑Performance Synthetic Diesel Engine Oil. This oil effectively prevents soot and carbon deposits, enhances fuel economy, and reduces particulate buildup in the diesel particulate filter.
Currently, Yinhang has developed engine oils that fully meet the API CJ‑4 standard. In particular, its specially formulated API CJ‑4 “Jianbing Chaoneng” series has earned widespread acclaim from users.
◆Why is the API CJ-4 standard necessary?
New emission standards for heavy-duty engines have officially come into effect. Engines that meet these standards are equipped with advanced emissions-control technologies, including diesel particulate filters (DPFs) and exhaust gas recirculation (EGR) systems. The API CJ-4 specification addresses both this new requirement and the transitional needs of older‑model engines.
◆Has the API CJ-4 standard been endorsed and recommended by engine manufacturers?
Yes. API CJ‑4 grade engine oil is designed for engines running on ultra‑low sulfur diesel (ULSD) and has undergone rigorous testing, fully meeting the performance and drain‑interval requirements of OEMs and end users.
◆ How does API CJ-4‑grade oil differ from earlier grades?
The additive system of API CJ‑4 engine oil has been specially formulated to meet the demanding operating requirements of modern engines while also protecting advanced emission‑control systems such as DPFs. Compared with earlier oil grades, the CJ‑4 formulation delivers significant improvements in wear control, deposit control, fuel economy, shear stability, low‑temperature pumpability, and thermal‑oxidative stability.
◆What changes have been made to the oil drain interval for API CJ-4 lubricants?
The recommended oil-change interval for a specific type of lubricant is closely dependent on the engine type, operating load, fuel type, and other factors. The exact oil-change schedule should follow the manufacturer’s recommendations for both the engine and the equipment.
◆ Can API CJ-4 oil protect older‑model engines as effectively as API CI‑4 oil?
Yes. API CJ‑4 lubricants are compatible with both new‑generation engines and existing older‑model engines. API CJ‑4 oils must pass several new engine‑simulation tests that were not required under previous standards. Oils meeting the API CJ‑4 specification deliver significantly enhanced performance: in addition to providing superior protection for emission‑control systems and complying with emission regulations, they further reduce engine wear, control piston deposits, and lower fuel consumption.
◆Is API CJ-4 engine oil suitable for off-highway vehicles (e.g., field‑operation vehicles and stationary equipment such as generator sets)?
Suitable. If users need to operate in the aforementioned off‑highway vehicles, which typically run on high‑sulfur diesel, Pilots recommends using CJ‑4‑grade Vanguard Ultra‑Performance Synthetic Diesel Engine Oil. This oil effectively prevents soot and carbon deposits, enhances fuel economy, and reduces particulate buildup in the diesel particulate filter.
Currently, Yinhang has developed engine oils that fully meet the API CJ‑4 standard. In particular, its specially formulated API CJ‑4 “Jianbing Chaoneng” series has earned widespread acclaim from users.
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