1.冷卻降溫：潤滑油能夠將熱量帶回機油箱再散發至空氣中，這樣，零部件不至于溫度過高。Cooling: the oil can be brought back to the heat engine oil tank and then distributed to the air, so that the parts are not too high temperature.

2.潤滑減磨：活塞和汽缸之間，成都升降機主軸和軸瓦之間均存在著快速的相對滑動。Antifriction: lubrication between the piston and the cylinder, the lift shaft and bearing between Chengdu are relatively sliding fast.

3.密封防漏：潤滑油可以在活塞環與活塞之間形成一個密封圈，減少氣體的泄漏和防止外界的污染物進入。Seal: lubricating oil can form a sealing ring between the piston ring and piston, reduce the gas leakage and prevent access to external contamination.

4.清洗清潔：好的潤滑油能夠將發動機零件上污物沖洗并帶回機油箱。保持各零件表面光潔。Clean and clean: good lubricating oil can flush the dirt on the engine parts and bring back the oil tank. Maintain the surface finish of all parts.

5.減震緩沖：當成都升降機發動機氣缸口壓力急劇上升，突然加劇活塞、活塞屑、連桿和曲軸軸承上的負荷很大，這個負荷經過軸承的傳遞潤滑，使承受的沖擊負荷起到緩沖的作用。Buffer: when Chengdu lifts the engine cylinder pressure rises sharply, suddenly intensified crumbs, piston and piston connecting rod and crankshaft bearing load, the load transfer through lubricated bearings, the impact load bearing play a buffer role.

6.防銹防蝕：潤滑油能吸咐在零件表面防止水、空氣、酸性物質及有害氣體與零件的接觸。Anti rust anti-corrosion: lubricating oil can adsorption on the surface of parts to prevent water, air, acidic substances and harmful gas and contact parts.