General Information for Lubricants
When the machine is operating in temperatures below
For cold-weather applications where transmission oil SAE 0W-20 is recommended, Cat Cold Weather TDTO is recommended.
Refer to the “Lubricant Information” section in the latest revision of the Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations" for a list of Cat engine oils and for detailed information. This manual may be found on the Web at Safety.Cat.com. The footnotes are a key part of the tables. Read ALL footnotes that pertain to the machine compartment in question.
In order to select the proper oil for each machine compartment, refer to the “Lubricant Viscosity for Ambient Temperature” table. Use the oil type AND oil viscosity for the specific compartment at the proper ambient temperature.
The proper oil viscosity grade is determined by the minimum ambient temperature (the air in the immediate vicinity of the machine). Measure the temperature when the machine is started and while the machine is operated. In order to determine the proper oil viscosity grade, refer to the “Min” column in the table. This information reflects the coldest ambient temperature condition for starting a cold machine and for operating a cold machine. Refer to the “Max” column in the table for operating the machine at the highest temperature that is anticipated. Unless specified otherwise in the “Lubricant Viscosities for Ambient Temperatures” tables, use the highest oil viscosity that is allowed for the ambient temperature.
Machines that are operated continuously should use oils that have the higher oil viscosity in the final drives and in the differentials. The oils that have the higher oil viscosity will maintain the highest possible oil film thickness.
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Not following the recommendations found in this manual can lead to reduced performance and compartment failure. |
Cat oils have been developed and tested in order to provide the full performance and life that has been designed and built into Cat engines.
Cat DEO-ULS or oils that meet the Cat ECF-3 specification and the API CJ-4 are required for use in the applications listed below. Cat DEO-ULS and oils meeting Cat ECF-3 specification and the API CJ-4 and ACEA E9 oil categories have been developed with limited sulfated ash, phosphorus, and sulfur. These chemical limits are designed to maintain the expected aftertreatment devices life, performance, and service interval. If oils meeting the Cat ECF-3 specification and the API CJ-4 specifications are not available, oils meeting ACEA E9 may be used. ACEA E9 oils meet the chemical limits designed to maintain aftertreatment device life. ACEA E9 oils are validated using some but not all ECF-3 and API CJ-4 standard engine performance tests. Consult your oil supplier when considering use of an oil that is not Cat ECF-3 or API CJ-4 qualified.
| Lubricant Viscosities for Ambient Temperatures | ||||||
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| Compartment or System | Oil Type and Performance Requirements | Oil Viscosities | °C | °F | ||
| Min | Max | Min | Max | |||
| Engine Crankcase | Cat DEO-ULS Cold Weather | SAE 0W-40 | −40 | 40 | −40 | 104 |
| Cat DEO-ULS SYN | SAE 5W-40 | −30 | 50 | −22 | 122 | |
| Cat DEO-ULS | SAE 10W-30 | −18 | 40 | 0 | 104 | |
| Cat DEO-ULS | SAE 15W-40 | −9.5 | 50 | 15 | 122 | |
When fuels of sulfur level of 0.1 percent (1000 ppm) or higher are used, Cat DEO-ULS may be used if S·O·S oil analysis program is followed. Base the oil change interval on the oil analysis.
Differential, Front Wheels, and Final Drives
Cat FDAO SYN, Cat FDAO SAE 60 or commercial oil that meets Cat FD-1 SAE 60 is preferred in most Differential, Front Wheels, and Final Drives, particularly continuous operation.
Cat TDTO or a commercial TO-4 oil may be used as a third choice in place of the recommended Cat FDAO, Cat FDAO SYN or commercial FD-1 oil in the Differential, Front Wheels, and Final Drives.
If the ambient temperature is below
If the ambient temperature is below
Transmission and Torque Converter
For cold-weather applications where transmission and torque converter oil SAE 0W-20 is recommended, Cat Cold Weather TDTO is recommended.
Steering System
Cat HYDO Advanced 10 SAE 10W, Cat HYDO Advanced 30 SAE 30W, or Cat BIO HYDO Advanced are the preferred oils in the steering system. Cat HYDO Advanced fluids have a 50% increase in the standard oil drain interval for steering systems (3000 hours versus 2000 hours) over second and third choice oils - when following the maintenance interval schedule for oil filter changes and for oil sampling that is stated in the Operation and Maintenance Manual for your particular machine. 6000 hour oil drain intervals are possible when using S·O·S Services oil analysis. Consult your Caterpillar dealer for details. In order to gain the most benefit from the improved performance designed into Cat HYDO Advanced fluids, when switching to Cat HYDO Advanced fluids, cross contamination with the previous oil should be kept to less than 10%.
Second choice oils are Cat MTO, Cat DEO, Cat DEO-ULS, Cat TDTO, Cat Cold Weather TDTO, Cat TDTO-TMS, Cat DEO-ULS SYN, Cat DEO SYN, Cat Cold Weather DEO-ULS. Third choice oils are commercial oils that meet Cat ECF-1-a, Cat ECF-2, Cat ECF-3, Cat TO-4, or the Cat TO-4M performance requirements, and that have a minimum zinc additive level of 0.09 percent (900 ppm). Commercial biodegradable hydraulic oil must meet the Cat BF-2 specification.
The minimum viscosity for commercial alternative oils used in most Cat machine hydraulic systems is 6.6 cSt at
| 773G, 775G, and 777G Off Highway Truck Lubricant Viscosities for Ambient Temperatures | ||||||
|---|---|---|---|---|---|---|
| Compartment or System | Oil Type and Performance Requirements | Oil Viscosities | °C | °F | ||
| Min | Max | Min | Max | |||
| Powershift Transmission and Torque Converter System | Cat TDTO
Cat TDTO-TMS Cat Cold Weather TDTO Cat TO-4 |
SAE 0W-20 | −40 | 10 | −40 | 50 |
| SAE 10W | −20 | 10 | −4 | 50 | ||
| SAE 30 | 0 | 50 | 32 | 122 | ||
| Cat TDTO-TMS | −10 | 50 | 14 | 122 | ||
| Steering System | Cat HYDO Advanced 10
Cat HYDO Advanced 30 Cat BIO HYDO Advanced Cat MTO Cat DEO Cat DEO-ULS Cat TDTO Cat Cold Weather TDTO Cat TDTO-TMS Cat DEO-ULS SYN Cat DEO SYN Cat Cold Weather DEO-ULS Cat ECF-1-a, Cat ECF-2, Cat ECF-3, Cat BF-2 Cat TO-4, Cat TO-4M |
SAE 0W-20 | −40 | 40 | −40 | 104 |
| SAE 0W-40 | −40 | 40 | −40 | 104 | ||
| SAE 0W-30 | −40 | 40 | −40 | 104 | ||
| SAE 5W-30 | −30 | 40 | −22 | 104 | ||
| SAE 5W-40 | −30 | 40 | −22 | 104 | ||
| SAE 10W | −20 | 40 | −4 | 104 | ||
| SAE 30 | 10 | 50 | 50 | 122 | ||
| BIO HYDO Advanced | −20 | 40 | −4 | 104 | ||
| SAE 10W-30 | −20 | 40 | −4 | 104 | ||
| SAE 15W-40 | −15 | 50 | 5 | 122 | ||
| Cat MTO | −20 | 40 | −4 | 104 | ||
| Cat TDTO-TMS | −15 | 50 | 5 | 122 | ||
| Hoist and Brake System | Cat TDTO
Cat Cold Weather TDTO Cat TO-4 |
SAE 0W-20 | −40 | 40 | −40 | 104 |
| SAE 10W | −20 | 50 | −4 | 122 | ||
| Differential, Front Wheels, and Final Drives | Cat FDAO
Cat FDAO SYN Cat FD-1 |
SAE 50 | −10 | 32 | 14 | 90 |
| SAE 60 | −10 | 50 | 14 | 122 | ||
| Cat FDAO SYN | −10 | 50 | 14 | 122 | ||
| Type of Cat Grease for Off Highway Trucks | ||||||||
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| Application Point(1) | Typical Load and Speed | Load Factor | Ambient Temperature Range | NLGI Grade | Grease Type | |||
| ° C | ° F | |||||||
| Min | Max | Min | Max | |||||
| Drive Shaft Slip Spline, Fan Drive Pulley, Hoist Control Bellcrank, Hoist Cylinder Bearing, Front and Rear Axle A-Frame Bearing, Steering Cylinder End, Steering Linkage, Steering Tie Rod and Pin Bearings, Swaybar, Tachometer Drive | High | 40-50% load factor. | −35 | 40 | −31 | 104 | 1 | Ultra 5Moly Grease |
| −30 | 50 | −22 | 122 | 2 | ||||
| Medium | 30-40% load factor. | −20 | 40 | −4 | 104 | 2 | Advanced 3Moly Grease | |
| Low | 20-30% load factor. | −30 | 40 | −22 | 104 | 2 | Multipurpose Grease | |
| Fan Drive Bearings, Belt Tightener | −20 | 40 | −4 | 104 | 2 | High Speed Ball Bearing Grease | ||
| (1) | Typical examples. Not all machines will have the same application points. |
Grease for the Autolube System
The grease used with the automatic lubrication system must not contain any graphite or PTFE.
Note: Pumpability is based on "US Steel Mobility and Lincoln Ventmeter Tests". Performance may vary depending on lubrication equipment and the length of the lines.
| Recommended Grease for the Autolube System | ||||
|---|---|---|---|---|
| Compartment or System | GreaseType | NLGI Grade | °C | °F |
| Min | Min | |||
| Cat Autolube System | Cat 3Moly Grease | NLGI Grade 2 | −18 | 0 |
| Cat Ultra 5Moly(1) | NLGI Grade 2 | −7 | 20 | |
| NLGI Grade 1 | −18 | 0 | ||
| NLGI Grade 0 | −29 | −20 | ||
| Cat Arctic Platinum | NLGI Grade 0 | −43 | −45 | |
| Cat Desert Gold | NLGI Grade 2 | 2 | 35 | |
| (1) | Preferred grease for most Off-highway Truck applications. |
Reference: Refer to Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations" for additional information about grease. This manual may be found on the Web at Safety.Cat.com.
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NACD Tier 4 Diesel Fuel Film | |
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EAME Tier 4 Diesel Fuel Film | |
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Tier 2 Diesel Fuel Film | |
Diesel fuel must meet “Cat Specification for Distillate Fuel” and the latest versions of "ASTM D975" or "EN 590" in order to ensure optimum engine performance. Refer to Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations" for the latest fuel information and for Cat fuel specification. This manual may be found on the Web at Safety.Cat.com.
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Ultra Low Sulfur Diesel (ULSD) fuel 0.0015 percent (≤15 ppm (mg/kg)) sulfur is required by regulation for use in engines certified to nonroad Tier 4 standards (U.S. EPA Tier 4 certified) and that are equipped with exhaust aftertreatment systems. European ULSD 0.0010 percent (≤10ppm (mg/kg)) sulfur fuel is required by regulation for use in engines certified to European nonroad Stage IIIB and newer standards and are equipped with exhaust aftertreatment systems. |
Misfueling with fuels of higher sulfur level will invalidate the warranty and have the following negative effects:
- Shorten the time interval between aftertreatment device service intervals (cause the need for more frequent service intervals)
- Adversely impact the performance and life of aftertreatment devices (cause loss of performance)
- Reduce engine efficiency and durability.
- Increase the wear.
- Increase the corrosion.
- Increase the deposits.
- Lower fuel economy
- Shorten the time period between oil drain intervals (more frequent oil drain intervals).
- Increase overall operating costs.
Failures that result from the use of improper fuels are not Cat factory defects. Therefore the cost of repairs would not be covered by a Cat warranty.
Caterpillar does not require the use of ULSD in off road and machine applications that are not Tier 4/Stage IIIB certified engines. ULSD is not required in engines that are not equipped with after treatment devices. For Tier 4/Stage IIIB/Stage IV certified engines always follow operating instructions. Fuel tank inlet labels are installed in order to ensure that the correct fuels are used.
Refer to Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations" for more details about fuels, lubricants, and Tier 4 requirements. This manual may be found on the Web at Safety.Cat.com.
Cat Diesel Fuel Conditioner and Cat Fuel System Cleaner are available for use when needed. These products are applicable to diesel and biodiesel fuels. Consult your Cat dealer for availability.
Biodiesel is a fuel that can be made from various renewable resources that include vegetable oils, animal fat, and waste cooking oil. Soybean oil and rapeseed oil are the primary vegetable oil sources. In order to use any of these oils or fats as fuel, the oils or fats are chemically processed (esterified). The water and contaminants are removed.
U.S. distillate diesel fuel specification "ASTM D975-09a" includes up to B5 (5 percent) biodiesel. Currently, any diesel fuel in the U.S. may contain up to B5 biodiesel fuel.
European distillate diesel fuel specification "EN 590" includes up to B5 (5 percent) and in some regions up to B7 (7 percent) biodiesel. Any diesel fuel in Europe may contain up to B5 or in some regions up to B7 biodiesel fuel.
Note: The diesel portion used in the biodiesel blend must be Ultra Low Sulfur Diesel (15 ppm sulfur or less, per "ASTM D975"). In Europe the diesel fuel portion used in the biodiesel blend must be sulfur free diesel (10 ppm sulfur or less, per "EN 590"). The final blend must have 15 ppm sulfur or less.
Note: Up to B20 biodiesel blend level is acceptable for use in Medium Wheel Loader engines.
When biodiesel fuel is used, certain guidelines must be followed. Biodiesel fuel can influence the engine oil, aftertreatment devices, non-metallic, fuel system components, and others. Biodiesel fuel has limited storage life and has limited oxidation stability. Follow the guidelines and requirements for engines that are seasonally operated and for standby power generation engines.
In order to reduce the risks associated with the use of biodiesel, the final biodiesel blend and the biodiesel fuel used must meet specific blending requirements.
All the guidelines and requirements are provided in the latest revision of Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations". This manual may be found on the Web at Safety.Cat.com.
The information provided in this “Coolant Recommendation” section should be used with the “Lubricants Information” provided in the latest revision of Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations". This manual may be found on the Web at Safety.Cat.com.
The following two types of coolants may be used in Cat diesel engines:
Preferred - Cat ELC (Extended Life Coolant)
Acceptable - Cat DEAC (Diesel Engine Antifreeze/Coolant)
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Never use water alone as a coolant. Water alone is corrosive at engine operating temperatures. In addition, water alone does not provide adequate protection against boiling or freezing. |