Use new coolant if replacing a cooling system part Always refer to vehicle manufacturer or service manual for recommended change intervals, cooling system capacity and specific cooling system service instructions. Add NOAT coolant extender at 300,000 and 600,000 mile and, as necessary, to maintain inhibitor level and pH. Red Pink SCA test kit required No Yes Initial fill No Cat Extender required No. When cooling levels drop through normal engine use, top up using this product as necessary and test coolant every 6,000 hours or 1 year-whichever is shorter- using a refractometer to make sure your coolant is adjust to the correct coolant/water mixture and then use test trips to assess nitrite level and pH. Feature Cat ELC Cat DEAC Coolant change interval 600,000 miles/6000 hours. *To achieve 750,000 mile extended service life, adhere to the following steps: perform a cooling system flush and then fill the cooling system with the proper mixture of PURUS® Heavy Duty Extended Life Antifreeze/Coolant and high quality water. life of the coolant Ensures Cat ELC performance to 1,000,000 km (600,000 miles) or 12,000 hours Cat ELC Extender and Flush Intervals Cat ELC Extender should be added after 6,000 hours or 300,000 miles (500,000 km) of operation, and the system should be drained and flushed with clean water after 12,000 hours or 600,000 miles (1,000,000 km. PURUS® Heavy Duty Extended Life 50/50 Prediluted Antifreeze/Coolant is a 50/50 blend of antifreeze and demineralized water that provides extended life up to 750,000 mile service life protection* when added to ANY NOAT ELC type heavy duty antifreeze/coolant. Its technologically-advanced formulation and TMC compliant color is based on a concentrated blend of premium long-lasting inhibitors designed to guard against temperature extremes, rust, corrosion, scale, and premature water pump failure. Container size availability will vary by region. ELC Extender is added at the half life of the coolant 500,000 km (300,000 miles) for truck engines and 6,000 hours for other engines. Probably equally important is a proper drain and flush of the old coolant.Įdit: I would ask Caterpillar tech support why their coolant is so bloody expensive and ask them to explain why it is worth the extra money.PURUS® Heavy Duty Extended Life 50/50 Prediluted Antifreeze/Coolant is intended for use and compatible with ANY nitrited heavy duty Extended Life (NOAT) antifreeze/coolant in ANY diesel powered truck, farm, off-road, and marine engine with aluminum and other engine metals. To obtain a freeze point of -52 C (-62 F) add one liter (gallon) to each 5 liters (gallons) of Cat ELC 50/50 premix. Since it is your employers truck and your employers money, barring any completely conclusive facts to the contrary I would use the CAT coolant. If you use the cheap coolant and something like the water pump should fail for some completely unrelated cause, who is going to have fingers pointed his direction? ![]() I hate to even bring this topic up, but it's part of the reality we live in. We don't 100% know and it's not your money you are to some extent gambling with. The extra money may be literally down the drain or it may be a very good investment in the service life of the engine. Isn't the coolant service life something like 750,000 miles? The extra cost of the CAT coolant is completely negligible on a cost per mile basis. Speaking only for myself, if I was charged with maintaining a truck owned by my employer I would run the CAT coolant. I believe Caterpillar was involved in the initial research involving Diesel cylinder liner cavitation erosion. Part of the reason the CAT coolant costs 3 times as much may be due to the CAT name but part of the cost may also be for superior coolant - I don't know for sure. Caterpillar allows the use of other coolants in Cat engines when they meet the Cat EC-1 spec which includes nitrites and molybdates, but recommends a shorter change interval of 3,000 hours or two years. Any trace of conventional coolant will turn ELC into a muddy brown mess, that is nearly useless as coolant. This added level of protection is a contributing factor to Caterpillar’s recommending a 12,000-hour/6-year change interval for Cat ELC. ![]() By complete flush, I mean everything, including the green goo the is stuck to the inside of the block, too. ![]() George, I have an older Ford Diesel pickup and I also struggle with coolant specs, although on a smaller scale and with my own money. Actually Cat ELC is still good, up to 10 water, but I wouldnt recommend it.
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