Ford F-350 Super Duty excessive tailpipe smoke due to internal filter clog causing oil consumption on Ford F-350 Super Duty

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

Problem overview

Some Ford F-350 Super Duty owners report experiencing excessive tailpipe smoke, which can be attributed to various issues such as internal filter clogs leading to oil consumption. These clogs, particularly in the oil cooler, can reduce coolant flow and increase temperatures in the EGR cooler, potentially resulting in its failure and cross-contamination between the exhaust and coolant systems. Additionally, owners may find that a plugged oil cooler causes oil to burn in the combustion chamber, contributing to the excessive smoke. If excessive white smoke is observed, it may indicate the need for maintenance, such as testing the EGR or performing regular cleaning and lubrication. It is crucial for owners to address excessive exhaust smoke promptly, as it can signify serious engine problems or fuel system irregularities that require immediate attention to prevent further damage.

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