Shopper's Discount: 1) $5 off any Full-Service Oil Change. Includes up to 5 qts. Valvoline oil, std. oil filter, lube and maintenance check. May not be combined with other same-service offers or discounts. Code APL10. 2) 10% off Preventive Maintenance Services. See store for details. May not be combined with other same-service offers or discounts. Code HUD1.