johnlanderson

I too have a Cat engine, 350. It was over heating as well. We took it to a Cat truck centre and they said the back of the rad was completely blocked. Then had one of the service guys crawl under and clean it out with a pressure washer. They also replace the blowdown hose and pointed it away from the rad. They then put it on there Dyno and ran it for a couple of hours and it did not run hot nor has it run hot for the last two years. I now have it checked each time I change the oil.