Promotional value expires 90 days after purchase. Amount paid never expires. May be repurchased every 120 days. Limit 1 per person, may buy 2 additional as gifts. Limit 1 per visit. Limit 1 per household. Valid only for option purchased. Customer tank must be equipped with an OPD valve (Overfill Prevention Device) and be within 12 years of manufacture date or within 5 years of the last certification date to be refilled. Can't combine with any other coupons, specials, and promotions, etc. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings