HUB-GEAR 4V3396 - Caterpillar

Engine: Commercial
All DieselEngine News SEBD9670, 06 October 2010, "Caterpillar Extended Life Inhibitor (ELI) Is Now Available for Use in Applications that Freeze Protection Is Not Needed". Disregard the previous article, refer to the article that follows.Many engine applications that do not require freeze protection from the engine coolant use Caterpillar Supplemental Coolant Additives (SCA) mixed with water. SCA can provide adequate engine corrosion protection, but requires regular checks and maintenance to ensure proper additive levels. The recommended drain interval for SCA is relatively short compared to extended life coolant products. Corrosion and cavitation due to improper SCA maintenance is the reasoning for Caterpillar Extended Life Inhibitor (ELI) being recommended in applications using water-based coolants.Caterpillar Extended Life Inhibitor (ELI) is a corrosion inhibitor concentrate that is mixed to approximately 7.5 % by volume with water. Cat ELI is based on organic additive technology used in Cat Extended Life Coolant (ELC). Cat ELI does not contain glycol, which means ELI does not provide freeze protection. But for applications not requiring freeze protection, use of a glycol-free product is more cost effective.Cat ELI provides an extended drain interval of up to 6 years or 12,000 hours. The drain interval may be longer as determined by using Caterpillar S O S coolant analysis. Cat ELI requires little maintenance compared to conventional SCA mixed with water.Cat ELI also provides superior corrosion and cavitation protection compared to SCA mixed with water. Additional information is available in , PELJ1212, "CAT ELI – PERFORMANCE LIKE CAT ELC FOR APPLICATIONS NOT EQUIRING FREEZE PROTECTION".As a review, refer to the following instances to determine when Cat ELI should and should not be used:Cat ELI may be used when:
Freeze protection is not required
The engine does not require the use of a glycol-based coolant
Extended drain interval is desired
Reduced maintenance compared to SCA is desiredCat ELI may not be used when:
Freeze protection is needed
The engine requires glycol of some percentage, such as in C7 through C32 Marine Engines cooled by heat exchangersRefer to Table 1 for the following information on the Cat ELI: part numbers, sizes and corresponding total volume of finished coolant produced after the addition of water.
Table 1
Part Number     Product     Container Size     Volume of Finished Coolant Produced    
351-9431     Cat ELI concentrate    
3.8 L (1 US gal)    
50.5 L (13.3 US gal)    
351-9432     Cat ELI concentrate    
20 L (5.3 US gal)    
267 L (70.5 US gal)    
351-9433     Cat ELI concentrate    
208 L (55 US gal)    
2773 L (733 US gal)    
366-2753 (1)     Cat ELI concentrate    
1000 L (264 US gal)    
13333 L (3523 US gal)    
( 1 ) NACD and LACD onlyNote: Water alone and/or water mixed with SCA or ELI are not approved coolants for use with C7 through C32 Marine Engines cooled by heat exchangers. C7 through C32 Marine Engines cooled by heat exchangers require a minimum of 30 percent glycol to prevent cavitatio