ENGINE SMOKING on 1993 Buick Regal

MY ENGINE IS SMOKING ALMOST NEAR BACK OF THE ENGINE WHAT DO U THINK IT IS

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4 answers
Most probable .. oil leak dripping on exhaust, possible coolant or transmission fluid dripping onto exhaust. All are flammable. Recommend repair as soon as possible.
More than likely an oil leak. I wouldn't recommend driving it, tow it to a mechanic and have them inspect the vehicle as soon as you can.
Coolant or oil is leaking onto the exhaust system. I would have it checked soon, and drive it as little as possible, because if it's oil it can catch fire, so be very careful.

Likely a leaking valve cover gasket.