The U.S. aircraft register, updated daily
Parts

Filter Oil

No failure report names the filter oil. 1 FAA approvals let 1 company make a replacement filter oil, Aerospace Filtration Systems holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a filter oil and sell it as an approved part for the models named. These are the companies holding such approvals for a filter oil:

For these models most: Airbus Helicopters EC 130 now H130 (1).

MakerPartReplacesFitsGrantedStatus
Aerospace Filtration SystemsFilter Oil (11.2 oz.) 100100-112Modification PartEurocoper France EC130B4. AS350B32015-04-26current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.