Sinclair Hwy Service is located at 206 8th St SE, Orange City, IA. This business specializes in Oil & Gas. Sinclair Hwy Service is open Mon, 8am-5pm; Tue, 8am-5pm; Wed, 8am-5pm; Thu, 8am-5pm; Fri, 8am-5pm; Sat, 8am-5pm; Sun, 8am-5pm and accepts American Express, Discover, Mastercard and Visa.