| series | Champcar complete |
| team | Team Cotter |
| year | race | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| 1985 | Long Beach | 9 | True Value/Master Mechanic | Roberto Guerrero |  | 8 | 26 | March 85C | Cosworth DFX | ||
| 1985 | Indy 500 | 9 | True Value/Master Mechanic | Roberto Guerrero | | 16 | 3 | March 85C [19] | Cosworth DFX | ||
| 1985 | Milwaukee | 9 | True Value/Master Mechanic | Roberto Guerrero | | 5 | 6 | March 85C | Cosworth DFX | ||
| 1985 | Portland | 9 | True Value/Master Mechanic | Roberto Guerrero | | 7 | 15 | March 85C | Cosworth DFX | ||
| 1985 | Meadowlands | 9 | True Value/Master Mechanic | Roberto Guerrero | | DNS | March 85C | Cosworth DFX | |||
| 1985 | Cleveland | 9 | True Value/Master Mechanic | Roberto Guerrero | | 15 | 19 | March 85C | Cosworth DFX | ||
| 1985 | Michigan | 9 | True Value/Master Mechanic | Roberto Guerrero | | 15 | 13 | March 85C | Cosworth DFX | 22 | |
| 1985 | Elkhart Lake | 9 | True Value/Master Mechanic | Roberto Guerrero | | 5 | 19 | March 85C | Cosworth DFX | ||
| 1985 | Pocono | 9 | True Value/Master Mechanic | Roberto Guerrero | | 13 | 18 | March 85C | Cosworth DFX | ||
| 1985 | Lexington | 9 | True Value/Master Mechanic | Roberto Guerrero | | 14 | 18 | March 85C | Cosworth DFX | ||
| 1985 | Sanair | 9 | Skil/True Value | Roberto Guerrero | | 2 | 23 | March 85C | Cosworth DFX | 27 | |
| 1985 | Michigan II | 9 | True Value/Master Mechanic | Roberto Guerrero | | 17 | 24 | March 85C | Cosworth DFX | ||
| 1985 | Laguna Seca | 9 | True Value/Master Mechanic | Roberto Guerrero | | 3 | 4 | March 85C | Cosworth DFX | ||
| 1985 | Phoenix | 9 | True Value/Master Mechanic | Roberto Guerrero | | 16 | 21 | March 85C | Cosworth DFX | ||
| 1985 | Miami | 9 | True Value/Master Mechanic | Roberto Guerrero | | 10 | 28 | March 85C | Cosworth DFX | ||
| 1986 | Phoenix | 2 | True Value/Master Mechanic | Roberto Guerrero | | 15 | 8 | March 86C | Cosworth DFX | ||
| 1986 | Long Beach | 2 | True Value/Master Mechanic | Roberto Guerrero | | 13 | 24 | March 86C | Cosworth DFX | ||
| 1986 | Indy 500 | 5 | True Value/Master Mechanic | Roberto Guerrero | | 8 | 4 | March 86C [27] | Cosworth DFX | 1 | |
| 1986 | Milwaukee | 2 | True Value/Master Mechanic | Roberto Guerrero | | 6 | 18 | March 86C | Cosworth DFX | ||
| 1986 | Portland | 2 | True Value/Master Mechanic | Roberto Guerrero | | 3 | 13 | March 86C | Cosworth DFX | 2 | |
| 1986 | Meadowlands | 2 | True Value/Master Mechanic | Roberto Guerrero | | 3 | 4 | March 86C | Cosworth DFX | 49 | |
| 1986 | Cleveland | 2 | True Value/Master Mechanic | Roberto Guerrero | | 9 | 17 | March 86C | Cosworth DFX | ||
| 1986 | Toronto | 2 | True Value/Master Mechanic | Roberto Guerrero | | 6 | 20 | March 86C | Cosworth DFX | ||
| 1986 | Michigan | 2 | True Value/Master Mechanic | Roberto Guerrero | | 4 | 24 | March 86C | Cosworth DFX | 13 | |
| 1986 | Pocono | 2 | True Value/Master Mechanic | Roberto Guerrero | | 7 | 21 | March 86C | Cosworth DFX | ||
| 1986 | Lexington | 2 | True Value/Master Mechanic | Roberto Guerrero | | 6 | 2 | March 86C | Cosworth DFX | 1 | |
| 1986 | Sanair | 2 | True Value/Master Mechanic | Roberto Guerrero | | 7 | 17 | March 86C | Cosworth DFX | 23 | |
| 1986 | Michigan II | 2 | True Value/Master Mechanic | Roberto Guerrero | | 2 | 22 | March 86C | Cosworth DFX | ||
| 1986 | Elkhart Lake | 2 | True Value/Master Mechanic | Roberto Guerrero | | 24 | 4 | March 86C | Cosworth DFX | ||
| 1986 | Laguna Seca | 2 | True Value/Master Mechanic | Roberto Guerrero | | 6 | 5 | March 86C | Cosworth DFX | ||
| 1986 | Phoenix II | 2 | True Value/Master Mechanic | Roberto Guerrero | | 8 | 12 | March 86C | Cosworth DFX | ||
| 1986 | Miami | 2 | True Value/Master Mechanic | Roberto Guerrero | | 1 | 2 | March 86C | Cosworth DFX | 111 |
32 entries
