Recent thread on Hemi engines would point to idling as being bad for the cams, with less oil available for cam lubrication. YMMV on that thread.
As well, extended idling in cold temperatures with newer DPF equipped diesels can be bad with soot buildup, resulting in frequent regens.
Which may cause the engines to go into limp mode. Had 1st hand experience with that in a large fleet.
As well, extended idling in cold temperatures with newer DPF equipped diesels can be bad with soot buildup, resulting in frequent regens.
Which may cause the engines to go into limp mode. Had 1st hand experience with that in a large fleet.