In rare cases, the oil quantity and fire bottle agents may erroneously start with low values. To reset this, close your simulator and delete any files that begin with 'Serviceables' in the following directory (select the proper path for your simulator and type):
Flight Simulator 2020 (Microsoft Store)
- %localappdata%\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalState\packages\tfdidesign-aircraft-md11\work
Flight Simulator 2020 (Steam)
- %appdata%\Microsoft Flight Simulator\Packages\tfdidesign-aircraft-md11\work
Flight Simulator 2024 (Microsoft Store)
- %localappdata%\Packages\Microsoft.Limitless_8wekyb3d8bbwe\LocalState\WASM\MSFS2024\tfdidesign-aircraft-md11\work
Flight Simulator 2024 (Steam)
- %appdata%\Microsoft Flight Simulator 2024\WASM\MSFS2024\tfdidesign-aircraft-md11\work
You can then start your simulator and the values should be normal.