Haha! I'm waiting for my new clippers to arrive, so I pulled the old Conair out, and read the instructions. It recommended at least once a month, depending on use, but only one drop, blade facing down, while turned on. Mine needed it as I immediately heard a change in the 'hum' of the motor... and they got a bit quieter, (and quicker!).
So I need to shave down the cat, and was getting everything ready... when DH decides he needs a haircut! Haha! Sure, hon, I'll shave your head! So someone suggested using a comb that leaves a longer cut first, as one can always go shorter... so I used the 7/8 in comb and I must say, it didn't turn out too bad. He said 'At least I didn't have to pay $15.00 for a haircut!' I said 'You're right! I charge $25.00' Lol!