Specially formulated to provide excellent wear protection† for many more miles to come, Quaker State High Mileage Full Synthetic 5W-30 motor oil is the best high-mileage motor oil of the Quaker State family of products. Quaker State High Mileage Full Synthetic motor oil not only gives you all the benefits of a full synthetic motor oil—like reducing friction to maximize horsepower††, protecting against the formulation of sludge and harmful deposits†††, and providing improved fuel economy††††—but it also conditions the seals in your aging engine to prevent leaks and reduce oil burn-offs. Designed to protect today's sophisticated engines, it's suitable for use in new and older vehicles, especially those with technologically advanced engines, high-performance cars, trucks, and SUVs, and vehicles driven in extreme temperatures. Quaker State High Mileage Full Synthetic 5W-30 is formulated to meet the performance needs of GM vehicles (dexos1 Gen 3). Quaker State High Mileage Full Synthetic comes with a warranty of up to 10 years or 400,000 kilometers, whichever is first*. (†Compared to industry standard Sequence IVA; ††Compared to Quaker State motor oil; †††Based on Sequence IIIH & VH tests on 0W-20 engine oil; ††††Based on latest industry standard. Quaker State Lubrication Limited Warranty: Free warranty of up to 10 years or 400,000 kilometers, whichever is first, if you exclusively use Quaker State Full Synthetic motor oil, Quaker State Synthetic motor oil, Quaker State High Mileage motor oil, or Quaker State motor oil. Enrollment required. Keep your receipts. Other conditions apply. See https://www.quakerstate.com/en_ca/warranty for details.)