The oil light comes on when engine is hot at the stop light. Didnt used to come on during the winter unless i go on a long journey or after agrassive driving around the city for like 30 mins or more. RPMs when im stopped at the red light on Drive are 5500. I use mobil synthetic 5w30 oil. Its a 2.7L at 89000 miles. I have engine flushed every 3rd oil change. Car runs really good perfomance wise.
How can i know if im having sludge issues

 

NO: 08-36-99 SUBJECT: Engine Oil Pressure Light Flicker DATE: Oct. 15, 1999 OVERVIEW: This bulletin involves adding a terminal/wire/vent to the oil pressure switch connector. NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 2.7L ENGINE. SYMPTOM/CONDITION: With a hot engine the oil pressure light may be on or flicker on at idle. DIAGNOSIS: Verify engine oil pressure as described on page 9-21 of the 1999 Concorde/Intrepid/LHS/300M service manual (Publication No. 81-270-9140). If engine oil pressure is within specification perform the Repair Procedure. PARTS REQUIRED: Qty Part No. Description 1 05017800AA Wire Terminal/Vent REPAIR PROCEDURE: [ol][*]Raise vehicle on a suitable hoist.[*]Remove engine oil pressure switch connector from switch.[*]Remove sealing dart from the empty cavity at the rear of the connector.[*]Pull terminal locking ring outward from front (switch) side of connector to gain access to terminal locking tabs.[*]Install wire terminal/vent, p/n 05017800AA, in place of the removed sealing dart. Slide locking ring back into place.[*]Attach the connector back on the oil pressure switch.[*]Spot tape the wire/vent to follow the harness towards the top of the engine compartment[/ol]

 

Thanks for the info... why the low rpms