Gilbert Oil Company is located at 403 Banesville Highway, Thomaston, GA.. Gilbert Oil Company is open Mon, 8am-5pm; Tue, 8am-5pm; Wed, 8am-5pm; Thu, 8am-5pm; Fri, 8am-5pm; Sat, Closed; Sun, Closed and accepts American Express, Cash, Discover, Mastercard, Personal Checks and Visa.