How did NHTSA miss this one? Engine exhaust manifold bolts broken leading to exhaust gases unknowingly getting into the cabin while driving which has also may be impacting my lungs. (I have a CT scan from MAYO to prove it.) This went on for at least 3 months. During long, 2 hours trips with the windows closed led to drowsiness. The problem was not only confirmed by the local Ram dealer but also confirmed this is a problem for all Ram vehicles using the 5.8 liter engine. These exhaust manifold bolts and gaskets should be replaced after so many miles or time. I had 95,000 miles on my truck when I brought it in for a tuneup. The service department then found the problem during their overall inspection. Frankly, ALL service departments should be doing the overall inspection first BEFORE any other scheduled maintenence. The only symptom was ticking on startup for about 10 seconds. Just search on youtube: Ram 5.8 liter engine ticking on startup OR replacing exhaust bolts. Youtube is FILLED with how to videos. The mechanic also stated this has been going on for years.