Quote:
Originally Posted by euromodder
I haven't seen any positive results from it either, I'm afraid. So I no longer use P&G on long stretches of road.
I do however try to coast as often as possible - i.e. getting up to or keeping sufficient speed so I can coast to certain points where speed needs to be reduced anyway like turns, speedbumps, PSL reductions,... at an appropriate speed.
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I will coast in neutral-engine on, on grades at are steep enough that I don't lose speed (and not too steep that I use what little engine braking there is on a diesel) and at posted speed reductions at the edge of towns. The pulse and glide works for a gas or petrol vehicle because that engine is less efficient at part throttle and light load. Our diesels don't have a throttle plate so the is much less restriction to the air pumping through the diesel engine. They can be very efficient at part throttle and light load as in highway driving.