CG958H Wheel Loader. Manual - part 29

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  VI Use Rule of Operation Oil 

Materials on Operation Oil 

Some abbreviations shall be subject to the terms of SAE J754, and others shall be subject 

to the ones of SAE J183 by levels. In the table of “Density of Operation Oil”, the 

recommended working density is available. 

6.1 Diesel Engine Oil 

Please use the following recommended diesel engine oil: API CD/SD, CD/SE, CD/SF, 

CD/SG or CD. 

z  The percentage of sulfur in fuel will affect the use of the diesel. For the effect of the sulfur 

content in fuel, the remaining and ingredients of the engine oil may be evaluated with 

infrared analysis method and ASTM D2896 procedures. The production of sulfide depends 

on the sulfur content in fuel, recipe of lubricant, working conditions of engine and ambient 

temperature etc. 

z  It is a common rule that the TBN of the diesel oil is 20 times of sulfur content in fuel. It 

may be modified by analyzing the oil employed. The effect of recipe of the lubricant 

depends on the ingredient of the additive. The balanced additive mixture of low TBN has 

the effects same as the additive mixture of high TBN. Based on the analysis on the oil 

employed, these results may be attained. 

Going against the suggestions above may shorten the service life of engine due to 

carbon precipitate or excessive wear. 

Selection of engine oil: The engine oil CF above shall be adopted. 

Viscosity 

10W  5W/30  10W/30 15W/30 15W/40 

Ambient 

temperature ℃ 

-20～-5 -25～25 -20～20 -10～25 -10～35 

Viscosity 20W/40 

30 40 

   

Ambient 

temperature ℃ 

-10～30 5～30 

>25  

 

This machine adopts SAE 15W-40 Mobil Delvac Super 1300. 

6.2 Hydraulic System Oil 

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z  The hydraulic oil employed may enable the components and hydraulic transmission parts of 

the hydraulic system to attain a longer service life and optimal working performance. In 

most hydraulic systems, the following recommended hydraulic oil shall be used: API CC, 

CC/SF, CD/SF, CD/SG, CD, CE/SF, CE/SG or CE. 

z  In case the oil of different viscosity is required due to extremely bad ambient temperature, 

the engine oil recommended by the SICHUAN CHENGDU CHENGGONG 

CONSTRUCTION MACHINERY CO., LTD. may be used. 

z  The industrial hydraulic oil that is applied to large load and has anticorrosion, anti-bubble, 

antirust and anti-oxidation additives may be used. 

z  This machine adopts Mobil DTE25-antiwear hydraulic oil. 

6.3 Transmission Fluid 

z  Using the oil recommended by the SICHUAN CHENGDU CHENGGONG 

CONSTRUCTION MACHINERY CO., LTD. may enable the transmission box to attain a 

longer service life and optimal performance. The oil for transmission box/transmission 

system oil recommended by the SICHUAN CHENGDU CHENGGONG 

CONSTRUCTION MACHINERY CO., LTD. is the one in conformity with the API 

CD/TO-2 code. 

z  Going against the suggestions above will possibly shorten the service life of the 

transmission box due to insufficient performance of materials and inconformity of friction 

materials with the friction requirements. 

z  Mixture of oil of various levels shall not be used for the transmission box. The oil mixture 

of various levels uses high moleclar polymer as improver of viscosity index. Because of 

permanent and temporary shear, the improver of viscosity index loses its viscosity 

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efficiency. 

z  The oil for transmission box and transmission system cannot be used for the engine, or not 

the service life of engine shall be shortened. 

z  This machine adopts Mobil Delvac Super (the level is SAE15W-40). 

6.4 Differential Gear and Final Transmission Fluid 

z  In order to attain optimal service life and performance of the parts of the front and rear 

axles, the oil of proper viscosity shall be chosen. The differential gear and final 

transmission fluid recommended by the SICHUAN CHENGDU CHENGGONG 

CONSTRUCTION MACHINERY CO., LTD. is the one in conformity with the API GL-5 

code. 

z  This machine adopts Mobilube GX

 HD80W-90

. 

6.5 Grease 

There are many kinds of grease recommended by the SICHUAN CHENGDU 

CHENGGONG CONSTRUCTION MACHINERY CO., LTD. They are applicable different 

conditions: 

z  MPGM 

MPGM is applied to heavy-duty roller bearing and joints. The high-pressure grease 

enables the machine to have its longest service life. Under NLGI NO.2 is applicable to the 

conditions of most kinds of temperature. 

If MPGM grease is not available, the multi-purpose grease containing 3%~5% 

molybdenum may be used. 

z  It is recommended to use MPGL (for non-high pressure area). 

The NLGI NO.2 grease is used for automatic light-load high-temperature lubrication 

(175 ). The grease serves good mechanical stability

℃

, anti-oxidation and antirust functions, and 

good separation torque. If this kind of grease is not available, the similar multi-purpose grease 

may be used. 

z  This machine adopts molybdenum disulfide lithium-based grease or 3# and 4# 

calcium-based grease. 

6.6 Braking Fluid 

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This machine adopts hydraulic braking system and does not require the braking fluid 

separately. The liquid for the braking system is same as the one for the hydraulic system. 

All kinds of operation oil shall be cleanly. The oil for hydraulic system shall meet the 

requirements of NAS9 level.