What was found
DTW - RETURNED TO POINT OF DEPARTURE, DTW. NR 1 ENGINE OIL CLOGGED LIGHT ILLUMINATED (ENGINE SN P-654600). AIRCRAFT ABORTED ON TAKEOFF ROLL. REMOVED OIL FILTER, FOUND CARBON IN FILTER, DRAINED AND RESERVICED OIL TANK. REPLACED FILTER. ENGINE IS A LOANER ENGINE. SCHEDULED FOR REMOVAL ON 6-10-95. ENGINE OWNER NOTIFIED OF CONDITION. (X)