If they do diesel (mostly corporate customers), and now do cooking gas (mostly homes), they might as well start delivering petrol for my gen too. I’ll thank them.
Using “or” in the copy is quite appropriate. It especially helps in the next line to make it clear to usere that immediate delivery is available whether they buy diesel OR gas and not only when they buy BOTH.
The UI on the other hand needs help. All those textures can hurt one’s eyes.