The DURON-E UHP 5W-30 from Petro-Canada Lubricants is an ultra-high performance diesel engine oil formulated with synthetic base oils and high performance additives designed to deliver superior engine protection with fuel economy benefits, according to the company. DURON-E UHP 5W-30 is formulated to the highest API and ACEA diesel and gasoline performance standards. DURON-E UHP 5W-30 keeps its ‘like-new’ properties longer, which allows it to continue to provide exceptional engine protection well past the OEM\-recommended drain interval. The company says, at 60,000km (roughly 38,000 miles), the product shows no sign of requiring an oil change, highlighting durability and ability to safely extend drains.