JD,
Saving brakes by using the engine to slow down instead of the brakes is very well possible: using the engine to slow down the car, means you just need to use the brakes less. This counts even more driving down hill. Apart from that, it prevents that the breaks will become overheated.
What I ment to say with 'shutting' the throttle, is already explained by Werner and Maersk, I think.
Where I, provisianally, disagree with Werner is the fact he says the engine will wear out faster, using it to decelerate. I've never heard any technician say that, and neither have I ever read that. But...convince me, Werner!
Regards,
JanF
2001 1.4 Petrol Exclusive
Cobalt Blue Metallic