Quote Originally Posted by vt_maverick View Post
... coasting down long hills with the clutch in rather than with the transmission in gear.
No ... no ... no!!!

Yes, to slipping it out of gear & coast down hills but never, ever, ever, never, ever ride the clutch. Every penny of fuel you save will be lost in an early clutch replacement/rebuild. Coasting down hills with the clutch depressed will cause the early demise of the throw-out bearing. Driving with your foot resting on the clutch (but not depressed) will also cause additional wear on the throw-out bearing but will also cause wear (& early demise) of the pressure plate.

Sorry to be so emphatic but it's a sensitive issue with me after teaching 6 kids to drive.

Similar issue with resting your foot on the brake whilst driving. Even light pressure will engage the brakes a little causing extra wear & killing mpg.