Engine Oil Additives/Engine Oil Flushes

Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.

Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.

    See also:

    Total Weight on Your Vehicle's Tires
    Be sure the vehicle's tires are inflated to the upper limit for cold tires. These numbers can be found on the Tire and Loading Information label. See Vehicle Load Limits . Make sure not to go ...

    Online Owner Center
    Online Owner Center (U.S.) — www.gmownercenter.com/buick Information and services customized for your specific vehicle — all in one convenient place. • Digital owner manual, warranty infor ...

    Safety Chains
    You should always attach chains between your vehicle and your trailer. Cross the safety chains under the tongue of the trailer to help prevent the tongue from contacting the road if it becomes sep ...