Drivers across Ontario are upset about gas prices as they visit the pumps on Wednesday.
Prices jumped in many parts of the province overnight by an average of six cents per litre, due in part to a seasonal transition to summer gas, as well as geopolitical concerns.
Senior Petroleum Analyst Dan McTeague at GasBuddy.com says the rise is due to refineries adding components to get the gas ready for the summer months.
The increase will put most prices across the province in the 120-cents-per-litre range.
The the seasonal switchover by refineries to their summer brands of gasoline is done by mandate by both the Canadian and American governments.
According to these mandates, refineries must begin adding expensive components to the gasoline to ensure it doesn't become volatile as temperatures rise above 20 C. That's the point where most brands of gasoline begin to expand, which can cause problems with evaporation, pollution as well as onboard diagnostics.
The date for refineries to stop adding these components is September 15.
