For the save game bloating (which could be the reason for the crashes), you might want to try this mod:
Clean up by kuertee
Description
Prevents saved-game file-size bloating by cleaning the game of actor
and item references that are no longer required. (e.g. inactive
references created from dropped items that were picked-up by the
player.)
Cleans long-dead actors that may have been corrupted somehow.
Details
The cleaning process used is the game's inherent behaviour of
removing items that no longer has any "links" to the game world.
Normally, dead actors and "dynamically created" items that were not
picked up by the player will be removed from the world, when the cell
they are in resets. (Dynamic items are those created at game-time as
opposed to those created in the Construction Set. Examples of these
items are: those created by PlaceAtMe, those dropped by the Player,
those dropped by dying NPCs: e.g. shields, etc.)
However, there are cases when these actors and dynamically created
items will (for some reason or another) stay in the game world
forever. And actors not cleaned up by the game properly will never
respawn, causing a "broken" game experience. Saved-game bloat is the
result of these. And saved-game bloating may be the cause of some game
crashes.
To prevent crashes, I'd recommend Streamline's Streampurge feature (memory purging on an intelligent, scheduled basis - can be configured to do a memory purge before a save, which can help with stability; more info here) and Fast Exit 2 by Scanti. You can choose to enable only Streampurge and Streamsave and not the other Streamline features in sl.ini (Streamline's configuration file).
If you are running a 64-bit OS and have 4 GB or more RAM, you might want to try the 4GB EXE Patcher on Oblivion.exe . More info on the Steam forums thread on this link here.
You could also try OSR (Oblivion Stutter Remover):
This plugin makes Oblivion not "stutter" as much, and generally feel smoother or perform better. It prevents or mitigates a number of issues related to stuttering and framerates, and can reduce the frequency of stutter related crashes.
Make sure you set MaximumFPS = 0 in 'sr_Oblivion_Stutter_Remover.ini' to avoid it putting an artificial cap in your framerate. Aside from that, try using it with the default options. If it still crashes, you might want to try to replace the default Oblivion heap (memory manager) with one of OSR's. In 'sr_Oblivion_Stutter_Remover.ini', set bReplaceHeap = 1 and change iHeapAlgorithm to 1, 2 or 5 - read 'sr_Oblivion_Stutter_Remover.txt' for more info and other OSR tweaks that you could try.
Note that Streamline, Clean-up, Fast Exit 2 and OSR requires OBSE (Oblivion Script Extender)
After installing any new mods, make sure to run BOSS (Better Oblivion Sorting Software). BOSS properly sorts the load order of the mods, avoiding crashes and mod conflicts. It also provides a large number of usage notes for many mods, including requirements, incompatibilities, updates and bug warnings.
More info on configuration and mods that can help stabilize and prevent crashes in Oblivion here: http://tescosi.com/wiki/Oblivion/Stabilization_and_Optimization
Clientmod:
A clientmod is a simply modification which mostly just affect the look of your game or the gameplay (without any unfair advantages!). So this could be a texturemod or just some different soundfiles or something.
Servermod:
A servermod is needed to manipulate the game in a significant way. So there are servers which kick a player who didn't use a specific weapon or where you can't use your own classes your created (ref. CoD). Instead the servermodded lobby offers you some predesigned classes to achieve a specific kind of gameplay on this server. Servermods can also be little modifications like changed soundfiles (UT-Sounds in CS for example). Besides that there are servermods/tools which make it easier to administrate the gameserver, but I won't call this a mod, it's more an admintool.
Keep in mind that:
- some kind of mods are treated as cheating and may cause you to get banned
- some servermods require you to install the same mod on your client (some mods are downloading and installing them itself as you join a modded server)
- some mods may cause problems in different combinations. Read the manual of the mod for mor information
- if a mod needs the servermodification, then you need to play on a server with this mod installed to enjoy this mod
Best Answer
I finally found the problem with the mod. What I had to do was to add the mod's previous versions(All of them), as well as having a base file of the mod, so that it can render itself. Then the mod would render, and finally load.
It also became apparent that the file that was causing the crash was in fact the steering wheel in the latest update of the mod!