2000 Neon help

[stonedracer]

Ok, so my sisters 2000 plymouth neon is pissing me off. Its using ALOT of oil, but I dont know where. Its recently had the front/rear main seals, oil pan gasket, and head gasket done. along with pcv valve. all of the plugs are white and its not smoking. the entire bottom of the engine is clean. iv checked the oil filter/housing and thats clean. Its gone through 5 qrts in the last month and I have absolutly no idea where its going. when parked it does NOT leave an oil stain at all.

Any ideas?

[plainrt]

If plugs are white and not its not smoking when using 5qts in a month i would think its leaking out but ou say no stains.

[stonedracer]

If plugs are white and not its not smoking when using 5qts in a month i would think its leaking out but ou say no stains.
every time its parked, its parked on clean cement and their has been NO oil stains. plugs are definitly white. there is no oil in the underbody at all. drain plug,oil pan, oil filter/housing have all been double and triple checked. im so fed up with this car. its like its just magically disappearing.