Originally Posted by bufurd
...or better yet Diesel engine oil to protect the cam and lifters. Regular (modern) motor oil will likely take out a flat tappet cam and lifters over time. Good luck, nice engine.
Modern diesel engine oils have been quietly cutting back on the amount of Zinc and Phosphorus for several years now so using diesel oil is quickly becoming as much of a problem as other modern oils. The better option nowadays is an oil specially formulated for vintage cars.