"If the oil price keeps on rising" itself is an example of dollar loosing its value. Thats a given thing and you would not need an explanation from a Nepali Banker on where the $ will be traded with respect to Nepali Rupees.

For a short term, i think Dollar is bound to go up but in a long term i think it will go futher down as it benefits USA to devalue the dollar so that the manufacturing jobs can come back to US. Jobs comes back to the US and US buys back its T bills from china and india at a half price.