Coupon must be present at time order is written. Factory Certiﬁed Honda Technicians. Environmental Fee 8. sales tax extra. Up to 5 quarts of oil. synthetic additional. Must be present coupon when order is written. Cannot be combined with any other or previous purchase. Valid only at Grainger Honda. Honda vehicles only. Prices may vary by make. See dealer for complete details. Offer Expires 04-30-2020.