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6.4L Diesel – Oil Cooler Service Tips General Service Bulletin (GSB)
This document is designed to provide information and tips for cooling system inspections, flushing, and refilling that can assist in proper diagnostics and prevention of repeat repairs.
6.4L diesel engine oil coolers are being primarily replaced due to restrictions from cooling system contamination which can lead to Diagnostic Trouble Code (DTC) P012F setting.
Engineering review of returned oil coolers indicates that the primary cause of oil cooler restriction is due to contamination from other components in the cooling system.
See GSB: G0000013 for details.
