Please, if someone can tell me how I can tell if the engine has been wrecked. The car was driven for a while with no refrigerant, driver didn’t realize there was no refrigerant until the engine started smoking & car started slowing down. And if engine is wrecked, it has 162k miles on it, is it worth getting new engine? I’m in Phoenix, Az area, if there’s a mechanic you could recommend, would be greatly appreciated. Thx in advance for any & all help!