substanceApply OilColors & materialsA named craft material / finish lemma (Apply Oil) drawn as an exact public-domain workshop phrase.Apply Oil is historically related to Oil.gunsmith-manual seats orphan apply-oil beside oil as a first craft peer — object speech, not a text-container or tradition dump.from J. P. Stelle & William B. Harrison · The Gunsmith's Manual, PD Gutenberg #71928historically related to · sourced · documentedsourcesThe Gunsmith's Manual · J. P. Stelle & William B. HarrisonStelle & Harrison, The Gunsmith's Manual (PD Gutenberg ed.).