A manual transmission cannot slip - unless you have massive failure internally and your gearbox teeth have been all stripped off... the only place slippage can occur in the drivetrain of a manual is the clutch or guibo.Originally Posted by Jehu
It's perfectly possible to burn out a 540 clutch in 40k miles with a bit of spirited driving... ask me how I know.
If your revs are not rising disproportionately to your road speed - I'd say you've got something wrong with your engine.
Most likely a massive vaccum leak or the like - when in top gear and accellerating the engine's running at the most stress - any ****up in the mixture and you're gonna feel it.