How to Procedures Freeze Point Check To best measure the quality of anti-freeze coolant, a check of the freeze point (glycol concentration), by refractometer, should be performed at each service interval to ensure anti-freeze levels are within specification. Detroit™ requires a freeze point of -34°F (+/-10°F) to guarantee optimal engine protection. The exception would be certain regions that require a freeze point of -60°F to protect against colder climates. Laboratory Testing Laboratory testing is the best practice for determining ELC coolant quality and will provide vital information regarding the engine performance.
A factory coolant analysis program is available through authorized Detroit™ service outlets. To verify coolant acceptability, submit a sample for coolant analysis according to Table "Extended Life Coolant". However, a laboratory meeting ISO 17025 requirements may be used in place of the Detroit™ Genuine Parts Program laboratory. OAT Detection Strips OAT Detection Strips that monitor the organic acid levels can be used to test the concentration of corrosion inhibitors in the anti-freeze coolant. Detroit™ recommends consultation with your coolant manufacturer's technical representative for proper application.
ELC Enhancers/Extenders ELC enhancers/extenders can be used to extend the life of the coolant. These products should be added to your anti-freeze coolant when corrosion inhibitors fall below manufacturer's recommendations. Detroit™ recommends consultation with your coolant manufacturer's technical representative for proper application. Drain, Flush, and Refill Procedure (See Appendix C for Product Part number) When coolant has reached the end of life, it is recommended to properly clean your cooling system of any scale, deposits or any other contaminants that may reduce the efficiency of the heat transfer. The coolant must be drained completely including the block, radiator, and HVAC system.
Next, flush the system with fresh, clean water. Replace drain fittings. Mix required amount of Penray 2010 cleaner in a 5-gallon pail of water and pour into radiator inlet. Fill system completely with clean water. Re-circulate cleaning solution by idling engine for 2 hours after top hose is hot. Temperature should be 88° to 95°C (190 to 203єF) to allow the thermostat to open. Drain cleaning solution from the system. The radiator, block and HVAC system must both be drained. Flush with clean water (through the radiator inlet) for 3 to 5 minutes. Replace drain fittings. Mix required Penray 2011 in a 5-gallon pail and pour into radiator inlet (1 pound per 4 gallons cooling system capacity).
Fill system completely with clean water. Re-circulate the Penray 2011 conditioning solution by 104 All information subject to change without notice. Copyright © 2017 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0192