2003 Ford Mustang Owner Guide 5th Printing - Page 192
2003 Ford Mustang Manual
Page 192 highlights
Maintenance and Specifications An overfill condition of transmission fluid may cause shift and/or engagement concerns and/or possible damage. Do not use supplemental transmission fluid additives, treatments or cleaning agents. The use of these materials may affect transmission operation and result in damage to internal transmission components. Checking and adding manual transmission fluid (if equipped) 1. Clean the filler plug. 2. Remove the filler plug and inspect the fluid level. 3. Note: There are two different manual transmissions used in this vehicle and they have different fluid levels. For vehicles equipped with a V6 engine and Cobra the correct manual transmission fill level is at the lower edge of the filler hole. For vehicles equipped with a V8 engine (except Cobra) the correct manual transmission fill level is 1.3 cm (1/2 inch) below the edge of the filler hole. • Fill level for V6 and Cobra 192 2003 Mustang (mus) Owners Guide (post-2002-fmt) USA English (fus)