My 1999 CLK 320, over 120,000 miles, stalls after driving for a while when oil temperature reaches over "80" (190) on instrument panel. When engine cools, car starts again. Then, without warning, car stalls again. Noticed that no fuel being sent to fuel pump. Changed fuel filter. No change. When key turned to position "2", "check fluid level" message appears. Replaced oil. Tried to clear "check fluid level" by pressing "0" twice. Message says "fluid okay". Then, when I check message again, "check fluid level" reappears. Tried to clear over and over again but message reappears. Oil still full. Replaced oil level sensor, but same message. Replaced coolant temperature sensor, replaced fuel pump relay (twice) and replaced OV relay. Same "check fluid level" problem and car still stalls after oil temperature reaches over "80" on instrument panel. Also, recently replaced crankshaft, main belt, upper oil pan, air mass sensor and blower motor regulator. "Check Engine" does not appear at any time. Any ideas?