Originally Posted by
Derfred
Ahh but could this engineer quantify what additional wear engine braking would have on his gearbox? Or was he just making **** up?
I'm inclined toward the latter. I've never heard of compression braking harmful to a transmission. Certainly, it is completely normal for trucks, and in fact trucks are frequently equipped with devices which increase the effectiveness of compression braking. I'm not seeing a reason why compression braking would be any more harmful to a gear train than accelerating.