4 oil change certificates. Good for 1 complimentary oil change. For up to 5 quarts 5W20 or 5W30 Semi Synthetic Oil and New Filter. Valid for most foreign and domestic cars, light trucks, and SUVs. No cash value. Duplicated or altered certificates will not be accepted. Good for up to $42.99 for an Express Oil Change at Westfield of Plainfield. Good for up to $31.99 for Full Synthetic at all participating locations. Valid at 14 participating locations only. Expires 12.31.20