As a Stanadyne Service Dealer TVDI not only provides you with replacements and service for all your Stanadyne fuel injection needs, TVDI also has a large inventory of “Stanadyne Performance Formula” the leading fuel additive in the diesel industry today. If you want to keep your diesel engine running smooth and efficient and prevent fuel injector failure or even something a lot more serious, we highly recommend you treat your fuel with “Stanadyne Performance Formula” the leading fuel additive in the diesel industry. Come in and see our selection and get our recommendations for your particular diesel application!stanadyne fuel performance additives