6.4l terrible mpg

[Fatbob Frank]

But what was the hand calculated MPG? And has the truck been recalibrated for the bigger tires?

Hope you had a great trip.

No, it wasn't recalibrated, so in reality the MPGs are probably better since I actually traveled farther than the OD thinks...
My speedometer is off by 4mph at 60.
Setting my cruise at 75 on the interstate we were probably doing 80...
Pretty fast for running 4:10 gears, plus tow/haul doesn't often see overdrive (if ever)

 

[toddmakesamove]

I drive stop light to stop light in ATL's metropolis. I get around 10 mpg during winter. On the HWY going under 80 mph I get 16-18 mpg during winter. My average is always in the 10's, because I do very little HWY driving. I have 1200 miles on the ODO. I use 87 gas and I will never change that unless in higher elevations under tow load. I usually just accelerate - decently quick - to speed and then sip the fuel. I also turn ECO Mode off every time.

I found warm-up EATS fuel and wrecks mpg avg. I have read here that others have experienced mpg avg changes with warm-ups. I'm miserable when it's below 50 degrees and 'have' to heat the truck up. Dang thing won't fit into any of my residential garages.

** I'm hoping for 12 mpg city during the summer & 18 mph HWY summer. Moreover, if I get 10 towing with trailer - I'm good. **

 

[DrTron]

I'm miserable when it's below 50 degrees and 'have' to heat the truck up.

Or just put on a jacket, get into the "cold" truck, start it and drive off. It's not like it takes ages to get warm air from the heater. 3-4 minutes tops.
(warming up cars by idling is illegal in many countries, btw., because of the environmental impact. Also puts more wear on your engine.)

 

[4xdad]

At -40 you have to warm up your truck plug it in and leave it plugged in while you warm up just don’t forget to unplug it

 

[toddmakesamove]

Or just put on a jacket, get into the "cold" truck, start it and drive off. It's not like it takes ages to get warm air from the heater. 3-4 minutes tops.
(warming up cars by idling is illegal in many countries, btw., because of the environmental impact. Also puts more wear on your engine.)

No. I strongly dislike the cold. 50 degrees and below is misery, for me. These trucks are made to be used - idling isn't causing "engine wear." Moreover, starting a truck in the cold and driving off IS causing engine wear.

Most importantly, I am an American and I could care less what the homosexuals do in Europe.

 

[DrTron]

These trucks are made to be used - idling isn't causing "engine wear."

Idling itself, no. But the point is that wear and tear on the engine occurs mostly during the warm-up period, when moving parts have not reached equilibrium regarding thermal expansion. Starting it cold and just idling it takes a lot longer to get to operating temperatures than starting and driving does. Idling is just that, an engine mode where barely enough fuel is injected to keep it running, resulting in a low energy output and a long warmup phase.
There was a time (before the 1980s, actually) when idling on a cold start made sense. That was when (gasoline) cars and trucks had carburetors instead of electronic injection systems. And as carburetors are pretty bad at vaporizing gas in cold temperatures, there actually was a risk of not enough fuel being vaporized when driving off (see before, idling uses very little gas) and getting too lean of a mixture and/or stalling the engine. But with modern trucks, that obviously doesn't apply.

But it's good to know that we in the US and Europe apparently don't share a planet or an atmosphere...

 

[SniperDroid]

Idling itself, no. But the point is that wear and tear on the engine occurs mostly during the warm-up period, when moving parts have not reached equilibrium regarding thermal expansion. Starting it cold and just idling it takes a lot longer to get to operating temperatures than starting and driving does. Idling is just that, an engine mode where barely enough fuel is injected to keep it running, resulting in a low energy output and a long warmup phase.
There was a time (before the 1980s, actually) when idling on a cold start made sense. That was when (gasoline) cars and trucks had carburetors instead of electronic injection systems. And as carburetors are pretty bad at vaporizing gas in cold temperatures, there actually was a risk of not enough fuel being vaporized when driving off (see before, idling uses very little gas) and getting too lean of a mixture and/or stalling the engine. But with modern trucks, that obviously doesn't apply.

But it's good to know that we in the US and Europe apparently don't share a planet or an atmosphere...

Okay, two cents time. I owned about thirty different vehicles in my life time. When I was younger and always in a hurry, max warm up time was always less than thirty seconds. Even in the coldest winters, daily driver, work truck, wife's good car... start up and go. As the repair bills piled up for engine work, valves, lifters, knocking, rattling, poor performance, along came remote starters! The last twenty years I have had remote starters on all of out vehicles, and use it religiously. Dang! No more engine malfunctions. Nothing . Chevy, Chrysler, RAM, Ford (except for the tick when the manifold got a crack in it), and a Nissan van. It sure ain't because of better hardware, with all having over 100k... I go with starting up and warming up for two or three minutes to go... ten minutes before I start towing the Camper. Gas mileage is a construct of the weak minded. If you need high mileage you need to prioritize your driving style, and vehicle type. I want to tow a camper, and know mileage will suck. I can afford to pay the bill. I want comfort, so I buy with all the bells and whistles. I pay the extra. I get what I want! I am an AMERICAN, I was a Fighting Man, I am a Father, a Husband, and a friend to many. In my world we pay our own way... and get what we want.

 

[Wild one]

Idling itself, no. But the point is that wear and tear on the engine occurs mostly during the warm-up period, when moving parts have not reached equilibrium regarding thermal expansion. Starting it cold and just idling it takes a lot longer to get to operating temperatures than starting and driving does. Idling is just that, an engine mode where barely enough fuel is injected to keep it running, resulting in a low energy output and a long warmup phase.
There was a time (before the 1980s, actually) when idling on a cold start made sense. That was when (gasoline) cars and trucks had carburetors instead of electronic injection systems. And as carburetors are pretty bad at vaporizing gas in cold temperatures, there actually was a risk of not enough fuel being vaporized when driving off (see before, idling uses very little gas) and getting too lean of a mixture and/or stalling the engine. But with modern trucks, that obviously doesn't apply.

But it's good to know that we in the US and Europe apparently don't share a planet or an atmosphere...

Being a Mississippi resident what you call cold and what alot of the planet calls cold are to differant entities.Alot of vehicles don't get shut off where the temps are -45 or colder if you don't have access to a 120 volt outdoor plug-in to plug the block heater in,so they'll sit an idle 24/7 except to put fuel in them or check the oil.

 

[2020PW]

Okay, two cents time. I owned about thirty different vehicles in my life time. When I was younger and always in a hurry, max warm up time was always less than thirty seconds. Even in the coldest winters, daily driver, work truck, wife's good car... start up and go. As the repair bills piled up for engine work, valves, lifters, knocking, rattling, poor performance, along came remote starters! The last twenty years I have had remote starters on all of out vehicles, and use it religiously. Dang! No more engine malfunctions. Nothing . Chevy, Chrysler, RAM, Ford (except for the tick when the manifold got a crack in it), and a Nissan van. It sure ain't because of better hardware, with all having over 100k... I go with starting up and warming up for two or three minutes to go... ten minutes before I start towing the Camper. Gas mileage is a construct of the weak minded. If you need high mileage you need to prioritize your driving style, and vehicle type. I want to tow a camper, and know mileage will suck. I can afford to pay the bill. I want comfort, so I buy with all the bells and whistles. I pay the extra. I get what I want! I am an AMERICAN, I was a Fighting Man, I am a Father, a Husband, and a friend to many. In my world we pay our own way... and get what we want.

Don’t say that. The oil police and cam shaft patrol will be coming shortly.

Idle… bad…

Lmao

 

[4xdad]

If you are warming your truck up you are not idling you are creating heat