YA i also started adding hi octane of 6 to 7 litres with normal fuel when going on long routes. So lets see what result i will get in future. Whenever i get pso fuel in my car it drops mileage. So only prefer shell. And feels like meri gari ney kasam khae hui hai k jab tak ek drop pso wale fuel ka hoga is ney mileage improve nahi karni.So i think meri gari me abi k kahi pso k fuel k drops hain hahahaha