Is Pennzoil Dexos1 Motor Oil Approved for Use With GM Vehicles?

Pennzoil oils bearing the Dexos1 logo are officially licensed and approved for use in General Motors vehicles designed for use with the Dexos1 oil standard. Dexos1-approved Pennzoil products include Pennzoil Gold Synthetic Blend and Pennzoil Platinum Full Synthetic oils in 0W-20, 5W-20 and 5W-30 weights.

The Dexos standards program is a GM standard to establish minimum requirements for motor oils for use in GM engines. Dexos1-licensed motor oils meet the standard for use in gasoline engines, while Dexos2 oils are intended for use in light-duty diesel engines. Oil manufacturers such as Pennzoil's parent company Shell Oil Products must license the trademark from GM to use the logo on approved products.