Tecumseh Model VLV60 502013C, D.O.M.7065K.
Original engine on Arien's self propelled L.M. Model# 911073, S/N 004063.
Photos available.
After engine starts perfectly, after running 20 min. with medium load, oil leaking to the top of the pan. Stop the engine and add 1-2 oz to oil level limit...