Cummins ISX Still Overheating

614203

{"text":"Ok here's the list:\nReplaced both thermostats...\nFlushed out cooling system and replaced coolant...\nBlew out all of the build-up between the cores....\n\nMainly overheats pulling long grades...\n\nOil temp spikes over 300*\nCoolant spikes to 280*...\n\nWhat's next?","pics":"[]","canComment":true}