CF-4 and CH-4 engine oil are two different types of engine oil. They have significant differences mainly in emission standards, use scope, grade and price.
Scope of use: CF-4 is suitable for high-speed, four-stroke, naturally aspirated or turbocharged diesel engines. CH-4 is used in high-speed, four-stroke, diesel engines and is required to comply with the 1998 U.S. exhaust emission standards and use standards with a sulfur content of less than 0.5%. This means that CH-4 motor oil may be superior to CF-4 in certain properties and qualities. This reflects its higher levels of performance and stricter emissions standards, but may also be affected by market demand and supply conditions.
CF-4 and CH-4 are both engine oil specifications, specifically used in diesel engines. However, they have different levels of performance and compatibility with different engine technologies.
The differences between CF-4 and CH-4 engine oils are as follows:
- Different emission standards: CH-4 has higher exhaust emission standards than CF-4.
- Different scope of use: CF-4 is suitable for high-speed, four-stroke, naturally aspirated or diesel engines equipped with turbochargers. CH-4 is used in high-speed, four-stroke, diesel engines and complies with the 1998 U.S. exhaust emission standards and uses standards with a sulfur content of less than 0.5%.
- Different levels: CH-4 has a higher level than CF-4, C stands for diesel, F/H stands for gasoline, and the further the letters behind it, the higher the level.
- Prices are different: The price of CH-4 is higher than CF-4.
CF-4: The CF-4 is an older specification designed for use with conventional, non-turbocharged diesel engines. It provides basic wear, deposit and corrosion protection. CF-4 oil may not be suitable for use in newer engines that require higher levels of performance and protection.
CH-4: CH-4 is a more advanced specification designed for use in both turbocharged and non-turbocharged diesel engines. It provides better protection against wear, deposits and corrosion than CF-4 oil. CH-4 engine oil is formulated to meet the higher demands of newer engines with more power and higher operating temperatures.
In summary, CF-4 is an older specification, suitable for conventional diesel engines, while CH-4 is a more advanced specification, designed to meet the higher requirements of new diesel engines. It is important to use the correct specification of engine oil recommended by the manufacturer to ensure proper performance and service life of your engine.