Toyota has been known to manufacture engines that cause sludge build up and will toast the engine at a way higher rate then 1-2% chance.
Toyota Broadens Sludge-Repair Program | The Center for Auto Safety
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
|