Somewhere in the late 1970's I purchased a case of WW II Military " Oil, Lubricating,
Preservative, Light", in 2 oz belt tins. Ord. Dept. axs-702 (Rev. 1) made by Standard Oil Company of New Jersey. Its been the only oil I have used in all my muzzleloaders, after washing all metal parts including barrel, with hot water including my, cartage guns. AJ.