I have a 96 Honda Civic (which I have talked about before with my water in the boot issue)
Every 6 months it gets a service and a WOF which includes an oil change and filter. In my last service (August) the mechanic said it was very close to being out of oil. Being a Saturday he wasn't able to look too hard for me at the cause of the issue

So I made a mental note (aka, Google Calendar reminder) to check the oil level every two weeks 
Every two weeks my oil level according to the dip stick is empty, there is practically nothing on it. So I have been filling it up with oil (about 1 -1.5 litres)
Next week, same story.

I have checked the drive way for signs of oil, made sure that when I start the car it isn't coughing smoke 

Without any more information, anyone know what could be going on?