Using DFCO to increase your MPG

[churp]

If I understand it right....idling in neutral still has gas going to the engine (small amount but enough to keep it running), while this totally cuts gas off to the engine during this period (nada/none even while the engine is rotating).....correct???

[AustinYaris]

Originally Posted by churp

If I understand it right....idling in neutral still has gas going to the engine (small amount but enough to keep it running), while this totally cuts gas off to the engine during this period (nada/none even while the engine is rotating).....correct???

I think that's the idea... but regardless... say you're coasting in neutral at 40mph down a gradual incline, you'll maintain that 40mph for much longer in neutral coasting than in 3rd gear. Right?

I would imagine that in 3rd gear... you would come to a slowdown much more quickly having to use more gas.

[BailOut]

AustinYaris,

churp hit it dead on. As for costing in N vs. 3 I don't know if you have the AT or MT but with my 5MT I can maintain my speed in a 5th gear DFCO on as little as a 2% grade.

Part of taking advantage of DFCO is selecting the right gear for the scenario. As I've mentioned a few times before this is where the MT really outshines the AT but the AT is by no means unusable for this.

[AustinYaris]

Originally Posted by BailOut

AustinYaris,

churp hit it dead on. As for costing in N vs. 3 I don't know if you have the AT or MT but with my 5MT I can maintain my speed in a 5th gear DFCO on as little as a 2% grade.

Part of taking advantage of DFCO is selecting the right gear for the scenario. As I've mentioned a few times before this is where the MT really outshines the AT but the AT is by no means unusable for this.

Ah... I see where I was confused... the 3rd gear thing really only applies to AT... I actually have a MT.... So you can use DFCO in the other gears... For some stupid reason, I thought DFCO would work only in 3rd gear regardless of MT or AT. Anyways.. I just got my Scangauge II today. I'll have to try out this DFCO. I'll post my results in a few days.