Petrol prices will go up by one sen after midnight today, while the price of diesel will remain at RM2.18 per litre.In a statement today, the Finance Ministry said that RON95 will trade at RM1.98 per litre while RON97 will trade at RM2.28 per litre, both of which are one sen up from last week’s rate.Putrajaya reinstated the weekly petrol and diesel price floating mechanism earlier last month.