VALVE GP-PUMP CONTROL 2537765 - Caterpillar

Recommendation
Caterpillar has had experience with "Cat Diesel Engine Oil", which is available from Caterpillar Dealers and recommends "Cat Diesel Engine Oil" SAE grade 40 for usage in the 3600 Family of Engines.
There are three areas to consider when selecting oil for the 3600 Family of Engines.
Lubricant Performance
Lubricant Viscosity
Lubricant Total Base Number (TBN)
Lubricant Performance
Minimum API classification of CD or MIL-L2104D plus an acceptable induction time on the deposit formation test (Caterpillar micro oxidation test).
CE is acceptable if it passes the deposit formation test.
CD is acceptable if it passes the deposit formation test.
CD2 is acceptable if it passes the deposit formation test.
CC is not acceptable for use in Caterpillar 3600 Family of Engines.
The deposit formation test must be performed on an oil sample from each oil source or supplier. The deposit formation test can be run at independent labs that have equipment and procedures. Three companies which perform deposit formation tests are listed below. Contact them or similar labs for current fees and capabilities.
AutoResearch Labs Incorporated
6735 South Old Harlem Avenue
Chicago, Illinois USA 60638
Telephone: (708) 563-0900
Fax: (708) 563-0087
EC&G Automotive Research Inc.
5404 Bandera Road
San Antonio, Texas USA 78238-2310
Telephone: (512) 684-2310
Fax: (512) 684-6074
ITT Telex: 4620246 AUTO RES A
Southwest Research Institute
6220 Culebra Road
San Antonio, Texas USA 78284
Telephone: (512) 684-5111
Telex: 244846
Chart A summarizes the interpretation of the micro-oxidation test.
1. Scheduled Oil Sampling (S O S) (with infrared analysis), oil consumption, and crankcase pressure must be analyzed every 250 hours.2. A maximum of 1,500 hours between oil changes for the first 3,000 hours.3. If no oil-related problems are encountered for the first 3,000 hours of operation, then the oil is considered acceptable for that particular application and associated load factor. Oil change periods can then be determined by S O S (with infrared) methods at 250-hour intervals.Lubricant Viscosity
The primary recommendation for the 3600 Engine is an SAE 40 grade oil. SAE 30 grade and multigrade oils can be used according to Chart B.
Lubricant TBN
Minimum initial new oil TBN should equal 20 times the fuel sulphur level as measured by ASTM D-2896. For fuels with less than 0.5% sulphur, the minimum TBN value is 10.
Lubrication Oil Change Period
In order to achieve the maximum usable life from the engine oil, and at the same time, provide the optimum lubrication qualities to the engine, Caterpillar recommends a regular Scheduled Oil Sampling program that is available through the Caterpillar worldwide network of dealers.
Caterpillar's Scheduled Oil Sampling is a maintenance tool for all Caterpillar Engines and Machines. It is basic, modern, preventive maintenance.
Caterpillar's S O S includes a series of three types of diagnostic tests: 1. Wear Analysis2. Chemical and Physical Testing3. Oil Condition Analysis
1. Wear analysis is performed with an atomic absorption spectrophotometer. After three oil samples are taken, trend lines for the various wear elements can be established. Impending failures can be identified when trend lines deviate from the established norm.2. Chemical and physical tests are used to evaluate the following:Viscosity (ASTM D 445 @ 100°C or 212°F) - oil should be changed when the used oil viscosity is