How do I apply a coupon code?

To apply a coupon code on Xtremediesel.com, the customer should first add the desired items to their shopping cart. Once the selection is complete, they can proceed to the checkout page. During the checkout process, there will typically be a designated field labeled "Coupon Code" or "Promo Code." The customer should enter their code in this field. It is important to ensure that the code is entered correctly, as codes are often case sensitive. After entering the code, the customer should click the apply or equivalent button to see if the discount is successfully applied to their order total. If the code is valid, the discount will be reflected in the order summary. If there are any issues, it may be useful to double-check the terms of the coupon to confirm eligibility and that it has not expired. For further assistance, it may be beneficial to look for additional information on the official website.