At Mammoth Chevron you will find friendly faces, fair prices and the convenience store is open 24 hours, 7 days a week (closed on Christmas). Mammoth Chevron has mechanics with over 85 years of experience and operates the only car wash in town. Mammoth Car Rentals is located at the station and offers affordable Car Rentals, One Way available to Reno, Mammoth Airport Pick-up Service with different Types of Cars Available.