I have a 2004 v8 with 190,000 on it. I had similar situation with overheating except I was on the phone taking driving 80 mph when I noticed some stream coming out. By that time then looked down and noticed check engine light came on and then could hear ticking going on, then the engine then died and I coasted to side of the road. Had it towed to a shop close by and we put coolant in and it wouldn’t start. They did coolant test I think enzyme or something and it was fine. Then compression test and cylinder 3,4,7 and 8 all failed. They said engine is shot and I need a new one and quoted my around $10k. Do I need to do any more tests from another mechanic or is it safe to assume the heads are completely shot cracked or block cracked? There is no oil or coolant leaking anywhere on the vehicle. It fires up but of course dies with that many misfires. They gave me options to rebuild it at just under $10k and a new rebuilt engine at $11k with warranty. Any ideas, I’m at a lose what to do and I’m not dumping $10-11k into an engine?