You just can't delete "Aral" in my mod and magically solve your problem because I don't mod 3d models at all.
1) The only solution I can think of it is to lower my mod in priority so it should load proper Aral. However, if that other mod changes other gas stations textures, you'll have to delete everything in that other mod not related to german gas stations.
2) Or you create a personal mod for your personal use with the proper Aral and everything else from me.
And everything above can fail because if there is a map editing done by that other mod.

I‘ve tried deleting the „Aral -Alles Super“ Logo in your Mod this morning, and it works. Now the Game shows the correct logo (maybe from another Mod 🤷🏼). It was very easy. Only the Price Sign is still „wrong“, and i don’t find out where the graphic for this is located. I‘ll post a picture later.

Ah, ok then. Glad it worked.

Gas price stand file: gas_ger.dds in model/sign/gas folder.

One day I will overhaul textures including that one. It was properly done, but after one update...

Thank you for your info. Found it, and it worked.

https://ibb.co/Jc9QX7k

Ah, das alte Design.

Ach deutsch geht auch? :) Keine Ahnung ob das alt ist, dein Design gefällt mir besser, aber das die Preise einfach irgendwo auf dem Schild stehen sieht komisch aus.

https://ibb.co/NnZX3R0

My bad, it seems it's actually the new design.

Anyway, it's still incorrect except Aral sign. Blue colour is wrong, it uses generic SCS cards, no proper branding, 0-24 is wrong, it should be Super not Benzin...
Then there is a big Aral sign on gas station which utterly wrong.

But if you are satisfied, it's ok. I don't hate it ;).