From 1962 until 1971 a Swindon-built cross-country DMU, normally used on the Aberdeen to Inverness main line, was transferred in the summer months to work a daily round trip from Glasgow Queen Street station to Oban via this connection. It was joined from late 1965 by all Glasgow to Oban trains, re-routed following closure of the Dunblane to Crianlarich route - initially by a landslide in Glen Ogle but officially from April 1966 as part of the so called Beeching cuts.