2. The fuel consumption of Kaman 2.9 Expressway is about 10, which is 14 (including the fuel consumption of local road conditions, the car is well maintained, after all, the age of the car is about 10).
3. At present, Shenyang No.95 oil is around 6 yuan, calculated at 6. 1 yuan.
So at least add (120/100x14x6.1=)103 yuan of oil.