Engine Performance problem
1990 Nissan Sentra 4 cyl Two Wheel Drive Automatic 180000 miles

Basically the car smokes and runs hot when idle and fluid from somewhere starts squirting out or dripping out i can hear it squirting and hitting the engine.. i can also smell it and see the burn off because the car begins to smoke a lot... when i press on the gas i can hear fluid sounds... the car has oil problems the previous owner ran it on too low of oil so i have to put oil every month/every other month and the coolant has started running low.. i've filled it twice in the past 2 days it might need filling again i haven't checked....

Anyways i'm hoping the oil pan just needs to be changed or their is a leak somewhere that i can just put some liquid sealant in... please let me know your opinions...