Thread: New guy!
View Single Post
Old 11-15-2016, 04:37 PM   #5 (permalink)
Master Novice
elhigh's Avatar
Join Date: Jan 2008
Location: SE USA - East Tennessee
Posts: 2,311

Josie - '87 Toyota Pickup
90 day: 27.96 mpg (US)

Felicia - '09 Toyota Prius Base
90 day: 50.13 mpg (US)
Thanks: 424
Thanked 611 Times in 448 Posts
Coasting in neutral should be okay. Just don't try to coast with the engine off.

Whether it's worth the trouble to shift and coast will be up to you. When you add some instrumentation (SG or UG, whatevs), monitor injector duty under in-gear decel, see if the duty cycle goes to zero. If it does, the engine is simply being pulled along by the transmission in that circumstance. In that case it's really up to you to decide which is more effective, a fuel-less but somewhat shorter coast, or a longer one at minimal consumption?

With SG or UG you can do short "trip average" mpgs to find which is yielding the greater results. That may require a bit of fiddling and testing.

Lead or follow. Either is fine.
  Reply With Quote