leaking headgasket maybe?
and yeah, how are you coming to the conclusion that the coolant is gone?

 

I guess I came to that conclusion because my overfill tank is always empty after 3-5 days. Sorry Im new to this guys. My car isn't overheating or anything. It still runs perfect as the day I bought it. Its just making me worry a lot because I dont want my car to overheat, and the majority of my driving is always on the freeway.

 

You mentioned your resevoir is always empy, how's the coolant level inside the radiator itself?
You might have a small leak at the top of the radiator. Integra radiators have been known to crack since they use a plastic core.
Mines did a while back and I'd smell coolant burning every once in awhile, but it never leaked enough to drip onto the ground. It would just stay at the top and burn away so I changed it before it got any worse.

 

If your coolant resevoir tank always goes empty after a few days, you might want to pressurize your cooling system (cooling system pressure test). You may have a crack on the bottom or upper radiator tank or a leaking hose or a seeping waterpump or a blown headgasket.
Also perform a compression test. If you find that two or more cylinders have very low readings (lower than 120psi) then you have a blown head gasket. If both tests are fine, fill up your radiator and coolant resevoir tank when your car is cold. Be sure to open up the coolant bleed valve located by the thermostat to let out the air. (Some cars will have chattering or jumpy idle if you fill up the radiator without opening the coolant bleed valve). If filling up you radiator fixes the problem it sounds like your radiator was just low on coolant or there are air pockets in your system.

 

no need to apologize man

and yeah i had the same problem with my coolant slightly burning away at the top... never enough to leak down but enough to burn off...my extra tank was empty all the time...weird tho cuz my car still ran a lil bit colder still than when i had my stock radiator before.

 

that just happened to mine, a 95 gsr with like 66k on it. i never saw any visible leaks on the ground, but i did see wetness directly below the radiator on the spash shield while looking down from the engine bay. i saw replacement radiators online for liek $107 shipped, so bought one, installed it, and no more leaking coolant. my resivior level hasnt moved ever since i replaced it so it was definately my radiator. i got the replacement from http://www.radiatorbarn.com - quick free shipping and real good price. hope this helps..peace