Petrol Going Up In September

Petrol will be up on 1st September. Luckily this time they gave us a longer time before they push it up to rm2 on ron97 and rm1.75 on ron95. Now I am really wondering if I pump ron95 will there be any side effects on my car. On my car petrol cover they told me to use ron97. But since ron97 will be @ rm2, I am not sure which ron I should be using. I am using an old car, wira, around 11 / 12 years of age. My car is actually still in a really great form (that's my opinion). I wish to keep my car for at least another 5+ years or even more if possible since it has gone for a overhaul. Next reason for me to keep the car is because this car has a big space and during parties it can fit 3 tables and other stuff inside. If I get a car today, the car wont be able to fit so many things.

Anyway since like last time when petrol is going to go up at night, everyone will rush and fill up their cars. But since now they have already told in advance, please fill up your car to the max before 1st of September. I guess I will max it out and with a max out petrol (maybe rm60), I can use it for at least 3 weeks or if possible will try to push it to a month b4 refill :P