TM 5-3895-382-24 Converting a Cooling System from Conventional Coolant to Long Life Coolant/Antifreeze NOTE:   When the coolant is changed from conventional coolant to Long Life Coolant/Antifreeze, a Caterpillar cleaner should  be  used.    After  the  use  of  Caterpillar cooling  system  cleaners,  the  system  MUST be thoroughly flushed with clean water. To convert the cooling system from conventional coolant to   Long   Life   Coolant/Antifreeze,   perform   the   following procedure: 1. Drain the coolant. 2. Flush  the  system  with  clean  water  to  remove  any debris. 3. Use   a   Caterpillar   cleaner   to   clean   the   system. Follow  the  instructions  on  the  label.    Caterpillar cleaner is available from your Caterpillar dealer. 4. Drain  the  cleaner.    Flush  the  cooling  system  with clean water. 5. Fill  the  cooling  system  with  clean  water.    Operate the engine until the cooling system temperature is 49 to 66°C (120 to 150F). 6. Drain   and   flush   the   cooling   system   with   clean water. 7. Repeat Step 5 and Step 6. 8. Fill the cooling system with Long Life Coolant/Antifreeze. 9. Attach a label to the cooling system to indicate the system   has   been   converted   to   use   Long   Life Coolant/Antifreeze. Conventional Antifreeze/Coolant Recommended - Caterpillar's Diesel Engine Antifreeze/Coolant NOTE:   The following information and recommendations  are  for  Caterpillar's  Diesel Engine Antifreeze/Coolant only. Caterpillar's     Diesel     Engine     Antifreeze/Coolant     was specifically  designed  for  diesel  engine  cooling  systems and natural gas engine cooling systems.  Diesel Engine Antifreeze/Coolant   is   an   alkaline   type,   ethylene   glycol based  formula  containing  inorganic  corrosion  inhibitors and anti-foam agents.  Diesel Engine Antifreeze/Coolant was formulated with the correct additive levels to protect metal parts in diesel engines. Diesel Engine Antifreeze/Coolant will furnish adequate corrosion protection,  anti-foam  protection,  and  cylinder  liner/block pitting   protection.      Use   a   30   percent   Diesel   Engine Antifreeze/Coolant and 70 percent acceptable water/supplemental coolant additive solution. Major advantages of Diesel Engine Antifreeze/Coolant: Minimal silicate content -High silicate coolants, used with supplemental  coolant  additives,  can  cause  a  buildup  of solids over time.  Build-up of solids can cause plugging, loss   of   heat   transfer,   and   water   pump   seal   damage. Diesel   Engine   Antifreeze/Coolant   significantly   reduces solid  residue  build-up  that  causes  inhibitor  dropout  and water pump seal damage. No  need  to  add  supplemental  coolant  additive  on  initial fill  -Supplemental  coolant  additive  must  be  added  with other commercially available coolants. Diesel  Engine  Antifreeze/Coolant  is  available  from  your Caterpillar dealer in the following quantities: CATERPILLAR ANTIFREEZE COOLANT CONCENTRATE Part No. Size 8C-3684 3.8 L (1 US gal) 8C-3686 208 L (55 US gal) Maintenance Section Cooling System Specifications 1-27