The Leyland 680 six cylinder 11.1 litre diesel engine was used extensively on first generation DMUs, with a pair of engines on each powered vehicle. No.2 engine is pictured on Class 119 DMS 51085 (set L593) at Moreton-in-Marsh on 9 April 1983. Class 119s originally had AEC engines. It looks like this engine has had some welding work done to the rocker covers.