RCS Diesel began in 1980 as a joint venture between Ron Chiasson Jr. and Ron Chiasson Sr. Both men had cut their teeth in the industry buying and selling logging equipment. After decades of maintaining their own equipment, it was decided that they would offer their services to the public. Ron Jr, being trained as a toolmaker and machinist, gathered a team of ASE Certified engine builders and machinists and RCS Diesel Service was born.

RCS Diesel, located now in Ludlow, MA, has been serving New England and the World for over 35 years.