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Optimizing MPG in the Winter

Messages
7
Reactions
3
Points
2
Location
Canada
Vehicle
Explorer ST
#1
Hello friends,
I park my 22 ST in an insulated garage but I live in Canada so winter is cold. I use 91 octane fuel.
Questions:
1. The manual says the car is ready for driving as soon as you start the engine. Is that actually the case, or should I let the engine run for X minutes before I go?
2. If I have a stop for a few minutes in a cold weather, does it make more sense to turn the engine off (and then it cools down dramatically and might take more fuel the next time I start the engine), or to let it run while the car is parked (e.g., when picking up the kids from school, a typical few minutes stop)?
3. Does using a higher octane helps getting better MPG in cold weather?
4. Does slippery mode consumes more fuel than ECO?

Thank you
 



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