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Brand new Cat reman oil cooler failed on a c12....why???


I have 1000 miles and about 2 months time on a reman caterpillar oil cooler and only one end of the rubber was deteriorated and blown completely out. What would cause this? Would you consider this defective? I never had any level increase in the radiator as if I was gaining fuel dilution. There was never any smell of fuel in the coolant. The system was flushed very thoroughly many times with a fleetguard flush detergent after the old cooler went bad then even in that time frame I had another hose that I missed changing ( the little 4" rubber hose to feed the air compressor) blow out and I had to re fill with about 7 gallons of fresh coolant there. So now Im sitting here wondering why in the hell did this new cooler fail. I was running rotella elc coolant and AMSOIL full synthetic 15w-40 diesel marine engine oil.


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