Establusted fuel mistake

I have a technical doubt and maybe you can help me. For my work I always rent Nissan Terrano Petrolera trucks, but last week they gave me a gasoline and filled the pond with oil (I only turned on the engine, I did not come to make it walk), they had to make it washed to the pond and change of spark plugs, but they told me that it spoiled the catalytic and that they will have to change it, before my ignorance in the subject, I have no arguments It is for this reason that I ask them for help in this situation, I would appreciate them or not to guide me whether or not to apply a change of catalytic to a wrong filling of oil in a bencinero engine.

Thank you very much

Hi Chungunga, look at several points that Deves Saver, the Catalitical (Combertidor), is located in the vehicle's exhaust system, so it only has operation when the veículo is running, and only recovers exhaust gases, now if your truck starts, they can be reacted to oil (oil) and if the change or cleanliness would be necessary, if I did not start your vehicle, if it would not start your vehicle. Solution, now the oil (oil) is not mescla with the gasoline, that is, they are a bit separated such as water and kitchen oil, that is why if you only gave a starting touch, the truck fuel and non -oil It will fail having a clear correct fuel.