The service station advised oil. Since it is significantly less expensive than the oil I had been using, I was honestly terrified I would ruin the engine. I spoke with the mechanic, who assured me that everything was alright and that they were currently pouring regular oil into the vehicle. He consequently concurred, but the pros won't communicate because it isn't beneficial for him. After half a year of riding, I noticed that my fuel usage has decreased, indicating that everything is operating normally.