The History Behind The Service

Proudly serving our area since 1970!

Williams Diesel Service was established in 1970 and located on Magnolia Avenue in historic downtown Ocala, Florida. The current owners, Charles and Rosemarie Oliveros, bought the business in 1990, bringing their knowledge and expertise of the diesel industry from South Florida to Marion County.

Dedication and Commitment to our customers and industry

Williams Diesel is the authority of diesel fuel systems today because of the dedication and commitment that the owners and employees have poured into it. The majority of the employees working for Williams Diesel Service have been with the company for more than 10 years. These dedicated employees continue to build a strong network of satisfied customers.

Williams Diesel Service is the only authorized diesel fuel injection shop in North Central Florida and was the first authorized Bosch Diesel drive-in facility in Florida. We offer factory authorized diesel fuel injection service as well as professional drive-in service. We are experts on Ford Powerstroke, Chevy/GMC Duramax, and Dodge Cummins Diesel trucks. Williams Diesel has continued to grow with the rapidly changing diesel industry and is proud to be an authorized Bosch Common Rail rebuild facility.