Narrative:

On ground in ZZZ; after APU was started; there was a slight odor of oil in the flight deck. Smell dissipated and then we noticed it again upon landing in ZZZ1 once APU was started. Flight attendant notified us once we reached the gate that he also smelled an odor on landing. [I suggest] better maintenance of APU; oil filters; etc.

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Original NASA ASRS Text

Title: Air Carrier First Officer reported an 'oil' odor during preflight which dissipated and returned on landing.

Narrative: On ground in ZZZ; after APU was started; there was a slight odor of oil in the flight deck. Smell dissipated and then we noticed it again upon landing in ZZZ1 once APU was started. Flight Attendant notified us once we reached the gate that he also smelled an odor on landing. [I suggest] better maintenance of APU; oil filters; etc.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.