My Viking..does not need oil..the manual says only to clean out the bobbin case..said nothing about oiling the hook..my dealer always takes at lease a week..if not more..I learn the hard way ..do not waste the money..if there is no problem..on these machine..if they are care for ..if u are just worry about the lint collection..take the bottom plate off ..blow it out..I have done that to mine..I also thought after years .I should just have it clean..nothing was wrong with it. So finally I did take it in .but I was told a part was bad on the embroidery part..which I could not disagree with because .i hadn't use the embroidery part for ages..but it was fine the last time I used it..but I did took his word for it..the part and clean job ended up over 300 dollars..when I next sew on it..it now does not tell me when the bobbin is running out..it cuts the thread half the time when I push the button..it doesn't always start sewing the first inch..none of these things were happening when I took it in..I took it back ..it seems these things only happen at my house..REALLY..not saying this will happen to others..and yes it was a Viking dealer I took it too..just saying ..why ask for trouble and spend the money..and be without ..if there really isn't a reason..again just my opinion.