You are either leaking, burning or evaporating it. Slide a large piece of cardboard under your car when it is parked for a long time. I have had two mid 90's Accords and on the second one the oil sending unit started leaking oil pretty badly, along the lines of a quart every 2 weeks. Do you know how to remove the spark plugs? They will tell you if you are burning oil. If your spark plug wires are covered with oil when you remove them, you have a gasket in the valve covers that is bad and leaking oil there, but it will only leak so much until that spark plug hole is full. Even if you get oil all over your spark plug when you remove it, it won't look the same as burned oil on a spark plug looks. If you are evaporating it, switch brands. The semi-synthetic oil that an Acura/Honda dealer sells is only about $5/quart and, according to research online, is made by Conoco Phillips. If you have a very bad leak, like the oil sending unit, just use the standard Supertech from Walmart until you can get it fixed. Synthetic, even Supertech, will only leak worse.