Ford F-250 Super Duty oil leak from sending unit on left side of engine requiring repair on Ford F-250 Super Duty

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Ford F-250 Super Duty owners report experiencing oil leaks from the sending unit on the left side of the engine, which can lead to further engine damage if not addressed promptly. These leaks may also originate from various locations, such as the oil pan, oil filter, crankcase vent oil separator, or oil cooler. In some instances, the oil fill tube to valve cover O-ring seal may be mispositioned or damaged, contributing to the issue. Owners are advised to inspect the oil sending unit and surrounding areas for any signs of damage or misalignment. If the leak is indeed from the sending unit, repair or replacement may be necessary. Furthermore, checking the oil pressure to ensure it is within the manufacturer's specified range is recommended to avoid additional engine problems. Promptly diagnosing and resolving oil leaks is crucial for maintaining the performance and longevity of the Ford F-250 Super Duty.

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