THIS MOD IS NO LONGER NECESSARY AFTER PATCH 1.12.

I personally got sick and tired of having to look in my inventory during battles to figure out if I still had some oil left on my blade. This mod removes that hassle! It adds an indicator to the area of the screen which displays your current buffs, which tells you the type of oil applied as well as how many uses you have left before it runs out. Due to the way the game is coded it displays the number of uses left the same way as minutes are shown for regular buffs.

Gopher featured this mod in one of his videos (thanks a lot man!). You can see the mod in action at around 6:00 in this video.



Using the mod
There are two modes this mod can work in. Mode 1 is the default.

Mode 1: Oil icon is displayed when sword is drawn
Draw one of your swords and the indicator should appear if there is oil applied to it! If this doesn't happen then there is a bug (see the Bug Reporting section for more information).

Mode 2: Oil icon for both swords is displayed regardless of whether sword is drawn or not
To activate this mode, you'll need to open the text file in the mod folder. In there near the top is the alwaysDisplayOils variable, set to false by default. Change this value to true to activate this mode.

In this mode the oil icons for both swords will always be on screen.

Mod conflicts
If you are using this mod alongside any other mods, please be aware that sometimes there can be conflicts. I would recommend trying AnotherSymbiote's Script Merger tool. This is capable of solving a lot of conflicts but it's not foolproof. If you've done this and are still having problems please post a comment here and I'll see what I can do.

Current known conflicts which can't be fixed by Script Merger:

Buffs In Radial Menu by Germ1nal
Buffs Repositioned by TheLastWitcher

If you use one of the above mods, please check the downloads page to see if there is a version released which is compatible with the mod you are using. If you use one of these files you will need to make sure that this mod has a higher priority than the mod it is conflicting with in your mods.settings file. Also, DO NOT attempt to use Script Merger with with the above files and this mod. It could cause problems and there's really no need to.

Installation Instructions
Either:

Use NMM to install the file.
         
Or

Download the file manually and extract the contents of the folder to your Witcher 3/Mods folder.

Bug reporting
If notice any situations where this mod is not running as intended, please post a description of your problem in the comments. If you could post your mod list alongside this it will help me get to the bottom of the problem much quicker. If there are any active bugs I will post them in the Bug Reports tab so please check that first to see if your issue has already been reported. If you feel you've got more information about the bug or you just want to remind me that it needs fixing please comment!

Thanks :)

Credits
CDPR for the game and mod tools!
AnotherSymbiote for creating the Script Merger tool.
AzzFat for the Buffs Repositioned compatible files.