Research on oil loss analysis using Statistical Process Control (SPC) and Individual-Moving Range (I-MR) Control Map has been carried out at the “PM” Palm Oil Mill. Objective: The purpose of the study was to determine the oil losses in the condensate water and sludge separator by calculating oil losses using the Soxhlet extraction method and process analysis using SPC and I-MR and Fishbone. Results: The results of this study indicate that the average oil loss during the period October 1, 2021 – October 30, 2021 in the condensate water and sludge separator is 0.5163% and 0.4889%, respectively, and is still below the maximum limit set by the management, which is 0.6%. Analysis using SPC and I-MR and Kane Performance Index showed that the sterilization process and the process in the sludge separator were still consistent. Kane Performance Index (Cpk) in condensate water is 0.91 and Kane Performance Index (Cpk) in sludge separator is 1.03.