Dick_B wrote:
I would be in overdrive unless it starts to downshift frequently. What is frequently? Make it 15 minutes or less.
The manuals say things like "not in hilly country", "not if towing" and "Not in bad weather" as a general rule.
But the advice is the best advice.. If it is constantly "Hunting" for the right gear (Shifting frequently) turn it off. but if it's shifting into Overdrive and staying there for miles and miles and miles and miles (how far CSI-Cyber adn the WHO can see) Well... (yes that is a joke), Well then engage it. and leave it engaged, Makes a major difference in MPG on my Class A.