Oil Filters

Following a scheduled oil and filter change, the technician noted lower-than-normal oil pressure at idle. The new filter (p/n CH48110-1) was replaced and oil pressure indication was normal. Examination of the replaced filter noted some paint chips had been removed in the flange area. The submitter suspects that a paint chip could have contaminated the filter, causing it to go into bypass. These filters are packaged in cardboard boxes. There was no damage noted to the box containing the filter.

Editorial Staff

Tuesday, October 30, 2018 at 12:00 AM ET

Verified

Key Takeaways:

Multiple incidents report oil filter failures leading to low oil pressure or significant oil leaks.
Causes of these failures include manufacturing defects such as internal contamination (paint chips), damaged bypass valves, or insufficient threading.
External abrasion from adjacent engine components was also identified as a cause of filter damage.
Many of these issues occurred immediately after new filter installation, indicating potential quality control issues or installation challenges.