O’Reilly Multigrade Motor Oil provides high-quality engine protection under all driving conditions and is specifically formulated to provide extra protection against the harmful effects of city driving, where cars undergo higher stress due to constant stopping and going.
O’Reilly Multigrade Motor Oil low friction formula helps improve gas mileage for long engine life and helps protect against rust, corrosion, startup wear, and varnish build-up, and eliminates the need for extra oil additives. It also protects against thermal breakdown which helps prevent stuck rings.
O’Reilly Multigrade Motor Oil meets the requirements of API SP service category and is available in viscosity grades: SAE 5W-20, 5W-30, 10W-30, 10W-40, and 20W-50. O’Reilly Multigrade Motor Oil SAE 5W-20, 5W-30, and 10W-30 meet or exceed the demanding requirements of the International Lubricant Standardization and Approval Committee (ILSAC) GF-6A. ILSAC GF-6A comprises the latest standard for passenger cars, vans, light trucks, and sport utility vehicles motor oils.
Variations:

• 20-50 – Conventional Motor Oil; SAE 20W-50; 1 Quart
  
• 20-50-55 – Conventional Motor Oil; SAE 20W-50; 55 Gallon
• 20-50-5QT – Conventional Motor Oil; SAE 20W-50; 5 Quart