Shelf life bulletin
The shelf life of an aviation lubricant is the recommended time period during which ExxonMobil represents that the product is suitable for use (dispensing into equipment), provided the container has remained unopened, undamaged and was stored indoors.
Normal storage temperatures should be in the 0° to 40° C (32° to 104° F) range. For certain products, short duration excursions outside of this range may be acceptable. Please consult ExxonMobil if you are unsure.
ExxonMobil may extend the shelf life of a specific batch of product based on package style, package condition, known storage history or test results from an approved laboratory.
Once a container is opened, the product should be protected from contamination. It is good practice to use an open container’s content as soon as possible. Since degradation after a container is opened depends on the particular product, storage and handling conditions or potential contamination by the end user, the standard shelf life recommendations listed below are no longer applicable.
Some organizations, such as the US military, have their own periodic product retest requirements. These requirements may not coincide with the ExxonMobil shelf life recommendations.
The recommended time period information below applies to unopened containers.
|Product||Recommended Time Period|
|Mobil Jet™ 387, 254, ll||10 years in quarts; 5 years in pails and drums; 2 years in totes|
|Exxon HyJet™ IV-Aplus, V||10 years in quarts/gallons; 5 years in pails and drums|
|Mobil Aero™ Series||5 years in any container|
|Mobilgrease™ 33, 28||6 years in any container*|
|Mobil™ Aviation Grease SHC 100||6 years in any container*|
|Exxon Aviation Oil Elite™ 20W-50||10 years in quarts; 5 years in pails and drums|
|Mobil Avrex™ S Turbo 256, M Turbo 201/1010||10 years in quarts; 5 years in pails and drums|
|Mobil AGL™ Synthetic Aviation Gear Lubricant||5 years in pails and drums|
|Exxon Coolanol™||5 years in any container|
For a full list of all products, download the shelf life bulletin here
* If a layer of oil is observed on top of the grease, mix it into the top one-to-two inches (2.5cm to 5.0cm) of grease prior to use. Horizontally stored grease cartridges may bleed minor amounts of oil. This may make the container cosmetically unpleasing, but the grease remains suitable for use.