2011 Workhorse chassis, 18000 miles. When one shakes exhaust pipes, should there be movement where pipes join crossover, or should it have been torqued so they are rigid? Thanks
Welcome to the forum. The connections should be fairly tight. There is enough flex in the exhaust system the engine torque should not affect the system. I would look for signs of gas leakage at the joints. If there is signs of leakage, either try to tighten the connection yourself, or have it done. Today's engines run very clean, that you will not notice a leak, as CO has no odor.