Peak Diesel was founded in 2013, out of Monson Massachusetts. Built on education, experience, and passion we successfully satisfy customers, and put them first. Top notch service, testing, and recommendations are priorities. While offering routine service and maintenance, we specialize in after market performance, and getting the customers the results they want to see in their vehicle. Peak Diesel is dedicated to providing quality and timely service no matter how small or large the project may be.