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Consult your Caterpillar dealer for the latest oil recommendations. Refer to the Operation and Maintenance Manual, Lubricant Viscosities.
Some commercial oils that meet the API specifications may require shortened oil change intervals. The oil change intervals are determined by monitoring the oil
conditions. The oil change intervals are also determined by wear metal analysis. The Caterpillar SOS Oil Analysis Program is preferred.
1. Total Base Number TBN and Fuel Sulfur Levels for Caterpillar Direct Injection Diesel Engines
The TBN that is required in a new oil is dependent on the fuel sulfur level of the fuel that is being used. For direct injection engines that run on distillate diesel fuel, the
minimum TBN of the new oil should be 10 times the fuel sulfur level. The TBN of the new oil is defined by ASTM D2896. The absolute minimum TBN is five, even when
low sulfur fuels are used. Refer to Illustration 69.
Illustration 69 Y The TBN that is shown by ASTM D2896 X Percentages of fuel
sulfur by weight 1TBN of new oil 2 Limit of used oil TBN When the fuel sulfur exceeds 1.5 percent, choose an oil with the highest TBN that is
within the API CG-4 or CF-4 categories. Shorten the oil change interval according to the oil analysis. The oil analysis should evaluate the oil condition and engine wear
metals. A high TBN oil that is not within API CG-4 category or API CF-4 category can produce excessive piston deposits. This can lead to a loss of oil control and to
polishing of the cylinder bore.
NOTICE Operation at fuel sulfur levels over 1.0 percent may require shortened oil change periods to maintain adequate wear protection.
2. Caterpillar Fluids
Caterpillar fluids have been approved by Caterpillar in order to provide the performance and the life of Caterpillar components. Caterpillar fluids that are currently
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used for engines and for machines are offered by Caterpillar dealers. Caterpillar fluids are also offered for continued refills. Consult your Caterpillar dealer for more
information on these Caterpillar fluids.
Caterpillar recommends the use of the following Caterpillar fluids: ar Multigrade Diesel Engine Oil DEO
ar TransmissionDrive Train Oil TDTO ar Multipurpose Tractor Oil MTO
ar Hydraulic Oil HYDO ar Biodegradable Hydraulic Oil HEES
ar Gear Oil GO ar Multipurpose Lithium Grease MPG
ar Multipurpose Molybdenum Grease ar Special Purpose Grease SPG ar Premium Grease CPG ar
Extended Life Coolant ELC ar Diesel Engine AntifreezeCoolant
CATERPILLAR DIESEL ENGINE OIL DEO
Caterpillar DEO has been formulated with detergents, with dispersants, and with sufficient alkalinity in order to provide superior performance in Caterpillar diesel
engines. The multigrade DEO is blended in SAE 10W30 and in SAE 15W40. Use the table of lubricant viscosities to choose the correct viscosity grade that is based on
ambient temperatures. Multigrade oils provide the correct viscosity for a broad range of operating temperatures and for cold engine starts. Multigrade oils are also effective in
maintaining low oil consumption and low concentrations of deposits on the pistons.
For maximum performance in the engines in Caterpillar machines, Caterpillar recommends the following engine oil:
1. Diesel Engine Oil DEO
Multigrade DEO can be used in other diesel engines and in gasoline engines. Consult the engine manufacturers guide for the recommended specifications. Compare the
engine manufacturers specifications to the specifications of Caterpillar DEO. The current Caterpillar specifications are listed on the label and on the product data sheets.
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2. Commercial Diesel Engine Oils
