Howard DGA-15P pilot reported engine failure due to carburetor problem resulted in safe landing on airport.

Narrative

VFR cruise at 9;500 MSL. Flight Following from Approach. Engine completely lost power. Oil/Fuel pressures normal. Selected Fuel Boost Pump on. Tried various Mixture Control and Throttle positions. Fuel Pressure remained normal. Switched to the only other tank containing fuel. Tried various Throttle/Mixture Control positions. Fuel Pressure remained normal (5.0 PSI). Left windshield became 90% obscured by a mixture of 100LL/ Engine oil from under the cowling. Turned off Fuel Selector and Ignition. Propeller Control to Coarse Pitch and full-throttle to maximize gliding efficiency.Turned toward ZZZ; and informed ATC of my intention to land at ZZZ . Contacted ZZZ Tower and elected to land on Runway XX. Made left traffic and a normal touchdown. No damage to airplane. No injuries to pilot; or passenger.Aircraft removed from active runway and secured. Investigation revealed that carburetor on the P&W R-985 was streaming 100LL AvGas from around the Mixture Control shaft; whenever the fuel system was pressurized via the Boost Pump; or the Hand Wobble Pump. Airplane awaiting Carburetor repair/replacement at time of writing.