1. Use appropriate quality grade of lubricating oil
For gasoline engine should be used according to the additional device in intake and exhaust system and condition choose SD - level SF gasoline engine oil; Diesel engines are selected according to mechanical load CB - CD grade diesel engine oil, choose standard will be subject to no less than the 
manufacturer required.
2. Replace the engine oil and filter on a regular basis
Any quality grades of lubricating oil in the process of using oil will change. To a certain range, performance deterioration, will bring problems to the engine. In order to avoid failure, should be combined with the conditions of use on a regular basis in oil, and makes the oil medium (usually oil rod cap as well). The oil from the pores of filter through the oil of solid particles and then accumulate in the filter. Such as filter plugging, oil cannot pass filter, will burst filter or open the valve, from the bypass valve, through, still put the dirt back to the lubrication part, prompted the engine wear and tear, internal increased pollution.
3. Keep the crankcase ventilation is good
Now most of the gasoline engine is equipped with PCV valve (positive crankcase ventilation device) engine for air, but air pollutants in "will be deposited around the PCV valve, may make the valve plug. If the PCV valve block the reverse flow of gas pollution air filter, filter pollution, lower the filtration capacity, suction is the mixture of dirty, even cause the pollution of crankcase, which resulted in increased fuel consumption, increased engine wear and tear, or damage the engine. Therefore, must be maintained regularly PCV, removal of pollutants around the PCV valve.
4. Regularly clean crankcase
Engine in the process of operation, the high pressure of the combustion chamber unburned gas, acid, moisture, sulfur and nitrogen oxide through the clearance between piston ring and cylinder wall into the crankcase, and wear of the metal powder mixing, the formation of sludge. Small amount of suspended in the oil, when large amount of precipitation from oil, blocking filter and oil hole, cause the engine lubrication difficulties, causing wear and tear. In addition, when the oil in the high temperature oxidation generates film and carbon bonded on the piston, the engine fuel consumption increase, power drop, serious when the lag piston ring and cylinder. Therefore, regular use BGl05 (lubrication system efficient fast cleaner) clean crankcase, keep the engine inside clean.
5. Regular cleaning fuel system
Fuel oil for the combustion chamber through the process of combustion, inevitably form colloid and carbon deposition, in the oil duct, carburetor, nozzle and deposited in the combustion chamber, the fuel flow interference, destroy the normal air-fuel ratio, the fuel atomization, causes the engine out of shaking, blasting vibration, unstable idle speed, acceleration and poor performance problems. Using BG208 (fuel system powerful high-efficiency detergent) clean fuel system, and regularly use BG202 control the formation of carbon deposition, can always make the engine keep the best state.
6. Regular service tank
Engine water tank rust, scale is the most common problems. Rust and scale will restrict the flow of cooling fluid in the cooling system, reduce the heat dissipation effect, causes the engine overheating, even cause engine damage. Melt cooling were also can form acid, tank corrosion of metal parts, damage to the tank, leakage. Regularly use BG540 (tank strength high-efficiency detergent) clean water tank, remove the rust and scale, not only can guarantee the normal work of the engine, and extend the life of the tank and the engine overall.
