The Five Star DEF Store is shut down for 2 weeks so we can go on vacation and not fulfill items. Sorry for any inconvenience, and we'll be back around August 1.
Vacation
Erich+Kathryn
Erich and Kathryn are retired engineers with over 65 years of combined experience in engineering, manufacturing, and management. They started Five Star DEF to help families like them who travel and use DEF for their trucks and campers.Archive