Quote:
Originally Posted by apgrok1
You should be OK, but I would think that down-shifting would waste fuel.
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I guess that depends on if there is a fuel cutoff over a certain RPM or not.
If so, downshifting gets you to an RPM above the cutoff. No fuel is being injected, so mileage is infinite.
The alternative is shifting into neutral. In that case, the injectors are firing to maintain idle. Mileage is good, but not infinite.
If there is no fuel cutoff, I agree that downshifting would waste fuel. Don't do this on an old carbureted engine, for example.