Fuel Economy Rating Of Motor Oil

Since Europe is significantly different from the United States in terms of engine design, vehicle driving conditions, and government policies on energy conservation and environmental protection, this difference is also reflected in the different focus and extent of European automakers' attention to engine oil performance. . The European automobile industry pays great attention to energy conservation, giving top priority to automobile fuel economy and taking into account both power and emission performance.
ACEA European lubricant classification standard, the latest 2007 version is classified into 3 series. They are:
A/B Series: Gasoline and light-duty diesel engine oils
C series: suitable for catalyst type engine oil
E Series: Heavy Duty Diesel Engine Oil
The A/B series includes: A1/B1; A3/B3; A3/B4; A5/B5.
C series includes: C1; C2; C3; C4.
E series includes: E2; E4; E6; E7.
Quality grade selection
Engine lubricating oil quality grade, also known as service performance grade, is an important basis for the correct selection of lubricating oil.
1. Diesel engine oil
There are two main basis for selecting the quality grade of diesel engine lubricating oil. One is based on the sum of the mechanical load and thermal load of the automobile engine, represented by the strengthening coefficient; the other is based on the harshness of the engine working conditions.
For high-speed naturally aspirated and turbocharged four-stroke diesel engines produced after 1990, diesel engine oil of CF-4 or above should be used. For high-speed four-stroke diesel engines that appeared after 1998, in order to adapt to engine technology improvements and emission regulations, diesel engine oil of CH-4 or above grade should be used. CH-4 grade can replace CF-4 and CD. High-speed four-stroke naturally aspirated and turbocharged, heavy-duty diesel engines produced after 2002 should use CI-4 or above levels due to the existence of exhaust gas recirculation devices and the requirements of formula regulations and exhaust gas after-treatment technology. diesel engine oil, which can replace CH-4, CF-4 and CD.
2. Gasoline oil
According to the harshness of the engine working conditions, the additional devices in the imported car's intake and exhaust systems, and the production year, gasoline engine oil with the corresponding performance grade (quality grade) should be selected. Generally speaking, high-quality grade oil can replace low-quality grade oil, but low-quality grade oil must not be used to replace high-quality grade oil, otherwise it will cause engine failure or even damage.
For many new cars, under normal driving conditions, if synthetic engine oil is used, the engine oil can basically be changed every 10,000 kilometers, and some can even be towed for 20,000 kilometers. Auto maintenance professionals believe that "average driving" refers to frequent highway driving with few stops and starts. But if you often drive in the city, there are traffic lights everywhere, traffic jams happen at every turn, and most of the distance per trip is no more than ten kilometers, this kind of driving is classified as "wasting driving".