STP Engine Oil Additive

All orders are processed and shipped within 1-2 business days after your order is placed. Standard shipping times are between 3 to 7 working days depending on your location within the U.S.

For more details, visit our Shipping Policy.

We accept returns of unopened products within 30 days of delivery for a full refund. To be eligible for a return, the product must be unused and in the same condition that you received it. It must also be in the original packaging.

For more details, visit our Refund/Return Policy.