I haven't tried any oil on my eggs before but I have heard "Maries shrimp oil" is very good added to eggs; you can purchase it online; just do a search for salmon eggs. Also try putting any red jello on your eggs I have had good luck with this method and my friend swears by this; just sprinkle it on and let sit over night and you;re ready to fish, I didn't put my eggs in borax either, the jello toughens them up and they stay on the hook very nicely.