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  1. Kodiak & Topkick Forum
    Hey there, new to the DF. Didn't know if anyone has any experience with loss of coolant on the 7.8L in a 2009 C7500. I'm almost certain it's one or both of the EGR coolers but it will only lose any under a heavy load. I can idle the truck all day and pressure test the cooling system and it'll...
    7.8l c7500 kodiak topkick
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