Do Aluminum Radiators Need Special Coolant? The key to maximizing the life of an aluminum radiator is not so much the radiator coolant brand as it is the water type. All coolants sold today will protect aluminum radiators. This wasn't always the case, however.
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Coolant protection for aluminum radiators and cooling systems. A few years ago, off-highway equipment OEMs introduced aluminum radiators and engine cooling systems manufactured with the Controlled Atmospheric Brazing (CAB) process. These are lighter and less expensive than the old copper radiators, but as with any change in equipment standards,
Dex-Cool Antifreeze Coolant was introduced by GM in the 1990s and promised super-long coolant maintenance cycles—but suffice it to say, the antifreeze wasn't an immediate hit. So we went in to do some more research on Dex-Cool and came across this video from the engine experts over at Mahle. The video goes into plenty of detail on DexCool
If the SCAs are becoming depleted, a supplemental SCA known as coolant conditioner can be added to help boost levels back where they need to be. Conventional coolant does not have a very long life and should be changed roughly every two years. Conventional Coolants. Silicates for aluminum protection; Nitrites for liner cavitation protection That would have a bigger impact on how the copper/aluminum radiator/core fares over time. My personal preference for cooling system materials is copper. Short of silver, it is the best at thermal conductivity. With that said, an aluminum core will still get plenty hot and heat fine. For those guys who switched to Aluminum radiators, what coolant are you guys running? I read somewhere that there's a special coolant that has an aluminum protective additive? Click to expand L092Bc.
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