Tosser is a small petroleum company that operates a filling station in Montgomery, San Andreas and fuel pumps attached to The Welcome Pump Bar in Dillimore, San Andreas. It is a very small company with the above locations being its only known business locations. It, like Gasso, is a small-time player in the petroleum refining and sales industry only maintain a very small business presence. It is unknown whether Tosser has its own refinery or not but it may make use of the large Green Palms refinery and Octane Springs oil fields.