Section 1 : CCEC Diesel Engine Oil Prescriptions

INTRODUCTION

This Engineering Bulletin is a general description of correct usage and maintenance requirement for Chongqing Cummins engine lubrication oil. The purpose of this Engineering Bulletin is to  update and simplify the lubrication usage prescription of Chongqing Cummins Engine Co.,Ltd  ( CCEC ) and to update and simplify recommendations and guidelines for the end user .

CCEC prescribes the use of a high quality , diesel engine oil such as SAE15W/40 . API CF - 4 or NT, KT and M 11 mechanical injector engine or SAE10W/30 , API CF-4 for NT, KT and M11 mechanical injector engine used in the altiplano regions of Qinghai and Xizang, API CH-4 for QSK and M 11 electro-injector / electro-control engine, API C -4 oils can be used, but the drain interval must be reduced to 250 hours. High quality filters such as Fleetguard or their equivalent .

CCEC bases oil drain recommendations on oil performance classifications and duty cycle. Maintaining the correct oil and filter change interval is a vital factor in preserving the integrity of an engine. Consult your Operation and Maintenance manual for detailed instructions on determining the oil change interval for your engine .

One full flow filter and one bypass filter are strongly used on all engines of CCEC ( except for standby G-set ). Customer do not permit to take down whichever full flow or bypass filter.

SECTION 1 : CCEC DIESEL ENGINE OIL PRESCRIPTIONS

CCEC prescribes the use of a high quality, diesel engine oil meeting Amencan Petroleum Institute ( API ) performance classification CF-4 or above ( QSK, M 11 electro-inject / electro-control engine prescribed use CH-4, API CF-4 oils can be used, but the drain interval must be reduced to 250 hours ). If the engine must operate without CF-4 grade oils, CD grade oils are permitted ( except QSK, M 11 electro-inject / electro-control engine ), but drain intervals must be shorted as requirement.

Do Not use oils under CD grade uniformly.

Special break-in oils are not recommended for use in new or rebuilt CCEC engines. The oil suppliers are responsible for the quality and performance of their products.

1. Multigrade Oils

CCEC primary prescription is for the use of 15W40 multigrade for normal operation at ambient temperatures above -15C [5F]. The use of multigrade oil reduces deposit formation, improves engine cranking in low temperature conditions, and increases engine durability by maintaining lubrication during high temperature operating conditions. Since multigrade oils have been shown to provide approximately 30 percent lower oil consumption, compared with monograde oils, it is important to use multigrade oils to be certain your engine will meet applicable emissions requirements. While the preferred viscosity grade is 15W-40, lower viscosity multigrades can be used in colder climates. See Figure 1: Prescribed SAE Oil Viscosity Grades at Ambient Temperatures.

Figure 1 : Prescribed SAE Oil Viscosity Grades vs Ambient temperatures

Oils meeting API CI - 4 and CJ - 4 and a 10W30 viscosity grade, must meet a minimum high temperature and high shear viscosity of 3.5 cSt., and ring wear liner wear requirements of Cummins Inc . and Mack tests. Thus, they can by be used over a wider temperature range than 10W30 oils meeting older API performance classifications. As these oils will have directionally thinner oil films than 15W40 oils, top quality Fleetguard filters must be used above 20C (70F). Some oil suppliers might claim better fuel economy for these oils. Cummins Inc. can neither approve nor disapprove any product not manufactured by Cummins Inc. These claims are between the customer and the oil supplier. Obtain the oil supplier's commitment that the oil will give satisfactory performance in Cummins engines, or do not use the oil.

2. Monograde Oils

Use of monograde oils can affect engine oil control . Shortened drain intervals might be required with monograde oils, as determined by close monitoring of the oil condition with scheduled oil sampling .

CCEC does dot recommend use monograde oils.

3. CCEC oil application and recommended drain interval see Table 1.

Table 1:

Note:

1. . API CD&CF are without limit to sulfur content, simplex CG-4&CH-4 oil demand sulfur content less than 0.05 percent. But sulfur content of domestic fuel can not meet less than 0.05 percent currently. CCEC recommend H or I grade oil can meet all requirement of CF-4/CH-4/CI-4, without limit to sulfur content. Therefore, CCEC recommends H or I grade oil to low emission electro-injector engine.

2. CCEC Cummins generator supplier recommends 10W/30 CF-4 or above oil to engine used on tableland. When ambient is above -15 centigrade, permit to use 15w/40 cf-4, ch-4 oils in worse condition, but need to control drain interval within 150 or 250 hours. CCEC special high oil is recommended to automobile and constructional machine.

3. CH-4 oils work with Fleetguard LF9009 filter can extend drain interval to 500 hours.

4. This drain interval is based on Cummins recommended drain interval and domestic engine working mode and fuel quality, uncontradicted with Cummins Inc. Recommended drain interval.

5. When better grade oi used, user must fully consider the endurance of filters, and shorten filter change interval suitable. Filter change interval is 250 hours general.