Sorry but I'm a newer user of the forum, I have bars leaks in my radiator/cooling system from the former owner. I bought the truck with a blown intake manifold and head gasket. My father and I rebuild the engine, and essentially the entire truck, but there is still nasty bars leaks in the radiator and overflow resivoir. This leads me to believe that it is still throughout the entire system. I was just curious on how, and what its the best method to completely flush the cooling system? Also should i check my thermostat and pumps to assure they are not gummed up etc? Ive been riding the truck for about 10k now and have done "crappy" 15 minute flushes before.
1996 LS 4x4 4 door

 

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