TM 5-3895-383-24 prevention of cavitation of the cylinder liners elimination of foaming of the coolant Test the SCA concentration or submit a coolant sample to your Caterpillar dealer at every oil change.  After every 250 service hours,  liquid  SCA  or  a  SCA  maintenance  element  may  be needed.    SCA  additions  are  based  on  the  results  of  coolant analysis.  Your Caterpillar dealer has test kits that will evaluate the concentration of additives in Caterpillar DEAC. The  following  table  indicates  the  amount  of  Caterpillar  SCA that is needed at the initial fill to treat commercial heavy-duty coolant/antifreezes.    The  table  also  shows  the  addition  of  an SCA for either liquid SCA or for the maintenance elements of a SCA.        These    additions    are    for    commercial    heavy-duty coolant/antifreezes and for Caterpillar DEAC. Table 20 Caterpillar SCA Requirements for Heavy-Duty Coolant/Antifreezes Caterpillar Liquid SCA Spin-on Element at Cooling System 250 Service Hour Capacity in L (US gal) Initial Fill ⁽¹⁾ 250 Service Hour Maintenance ⁽²⁾ Maintenance 22 to 30 (6 to 8) 0.95 L (32 oz) or 0.24 L (8 oz) or one unit 6V - 3542 111 - 2370 ⁽³⁾ one unit of 3P - 2044 31 to 38 (8 to 10) 1.19 L (40 oz) or one unit of 0.36 L (2 oz) or 111 - 2369 ⁽³⁾ both 3P - 2044 and 6V - 3542 one unit 111 - 2372 39 to 49 (10 to 13) 1.42 L (48 oz) or unit of 0.36 L (12 oz) or 111 - 2369 ⁽³⁾ both 3P - 2044 and 8T - 1589 one unit 111 - 2372 50 to 64 (13 to 17) 1.90 L (64 oz) 0.47 L (16 oz) or one unit 8T - 1589 9N - 3368 ⁽³⁾ two units 3P - 2044 2.37 L (80 oz) or two 0.60 L (20 oz) or one unit of 111 - 2371 ⁽³⁾ 65 to 83 (17 to 22) units of 3P - 2044 and both 111 - 2372 and 6V - 3542 one unit of 8T - 1589 3.32 L (112 oz) or three 84 to 114 (22 to 30) units of 3P - 2044 and 0.95 L (32 oz) or one unit 3P - 2044 9N-3718 ⁽³⁾ one unit of 8T - 1589 115 to 163 (30 to 43) 4.75 L (160 oz) or 1.18 L (40 oz) or one unit of two units 111 - 2371 ⁽³⁾ five units 3P - 2044 both 3P - 2044 and 6V - 3542 164 to 242 (43 to 64) 7.60 L (256 oz) or 1.90 L (64 oz) or two units 9N - 3718 ⁽³⁾ eight units 3P - 2044 two units 3P -2044 (1) Use a Caterpillar SCA when you do not use a Caterpillar Antifreeze.  You are not required to use Caterpillar SCA at the initial fill when you use Caterpillar DEAC. (2) Do not exceed the 6 percent maximum concentration.  Check with the supplemental coolant additive test kit. (3) Element Assem bly. NOTE: Due   to   the   individual   engine   applications,   the maintenance   practices   need   to   be   periodically reviewed in order to maintain the cooling system. Maintenance Section Cooling System Specifications 1-29