Cleaning the tunnels~Episode was filmed after 6th September to before 25th September.
Bryan enter 3234 cab, then climb onto a C151 to clean air filter. 235/236 was featured when Bryan was under a train, to profile the wheels. Then Bryan went to clean the head and tail of 005/006. And Bryan went to check the rails from Outram Park to Tiong Bahru, and clean the cross-over section between Outram Park and Tiong Bahru.