Biodiesel is more energy efficient than regular oil, producing 3.2 units of energy per unit of fuel compared to 0.89 for regular oil. An experiment tested how varying amounts of the catalyst potassium hydroxide (KOH) affected biodiesel production from canola oil and methanol. Results showed the highest percentage of methyl esters produced, 89.8%, used 5g of KOH per liter while the lowest amount, 89.5%, used 6g of KOH per liter.