Poor gas mileage

[SD Rebel]

I run two-cycle 1/5th scale RC Trophy Trucks, I keep a can of 91 octane E10, probably over a year without stabil sometimes, never seen it go bad.

I know people say 3-6 month for gasoline to get bad, but I have gone easily double that time with no issues. Of course I wouldn't try it on my real vehicles, but curious if anyone has actually seen fuel get bad in just a few months?

 

[Bigbags85]

I run two-cycle 1/5th scale RC Trophy Trucks, I keep a can of 91 octane E10, probably over a year without stabil sometimes, never seen it go bad.

I know people say 3-6 month for gasoline to get bad, but I have gone easily double that time with no issues. Of course I wouldn't try it on my real vehicles, but curious if anyone has actually seen fuel get bad in just a few months?

In my snowblower once. First year I had it, ****ed up and put regular gas in it. I thought I used the right ratio of stabil, but next winter it wouldn't even start. Took it apart it was all gummed up. Cleaned it up and it's worked fine ever since. Have since switched to the proper gas and honestly I just run it dry every spring.

 

[Jako]

I run two-cycle 1/5th scale RC Trophy Trucks, I keep a can of 91 octane E10, probably over a year without stabil sometimes, never seen it go bad.

I know people say 3-6 month for gasoline to get bad, but I have gone easily double that time with no issues. Of course I wouldn't try it on my real vehicles, but curious if anyone has actually seen fuel get bad in just a few months?

My 2001 Dodge Ram 1500 SLT had gas from July 13, 2021. I did not use the truck and decided to run the gas down. I had some issues with the truck stalling when pulling a K turn twice and while on the NJ TPK the motor conked out, pulled over and it started up again but this time it took more attempts. Filled the tank on Jan. 11th and several tanks since with no issues. Based on these circumstances I would say the gas was the issue. But I do not know if it was the gas itself or the gas over time, the tank was full which is supposed to help the gas from not deteriorating. Have in laws that do not use their car and have not had any issues with "old" gas in either of their vehicles. Had issue once with 2 cycle lawn equipment and have used fall gas in the spring with no issues numerous times in the past but try to avoid that situation these days.

 

[IvoryHemi]

the tank was full which is supposed to help the gas from not deteriorating

A full tank does not help prevent ethanol from causing fuel decay

 

[ferraiolo1]

No, it helps prevent condensation build up inside the tank, causing water to mix with the fuel.


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[Jako]

"Less air in the system gives these compounds less space in which to evaporate."

https://www.goldeagle.com/tips-tools/the-effects-of-gas-in-your-tank-over-long-periods-of-time/

LOSS OF VOLATILITY​

The most common issue with old gas is that it has lost many of the volatile compounds. These compounds are the first to evaporate, but they are also the most powerful components when ignited in your engine. Using up your old tank of gas before adding new gasoline can have a reduction in fuel efficiency for the remainder of the tank. Three things can help prevent this from becoming a big problem. If you add new gas before driving, this resolves much of the problem. Second, make sure that you leave your gas tank full when you aren’t using your car. Less air in the system gives these compounds less space in which to evaporate. Third, make sure your gas cap is tight and there is no place for an exchange of air.

 

[ibjlgup]

I can relate. My fully optioned Limited Hemi with the eTorque is only gettin 13.7 mile with mostly highway driving.

Exactly with mine also...very frustrating.

 

[theblet]

Exactly with mine also...very frustrating.

That's no good. What setup do you have? Rear gear, 4wd/2wd, Large tires, etc. If you fill out your signature with your specs it'll help us help you.

 

[Bigbags85]

Exactly with mine also...very frustrating.

Also where are you located? Mine wasn't getting very good gas mileage on the highway either while it was cold outside. Recently we've had some 50-70 degree days and it is getting great gas mileage now. No changes on my end as far as driving, gas, mods, etc.

 

[Idahoktm]

Also where are you located? Mine wasn't getting very good gas mileage on the highway either while it was cold outside. Recently we've had some 50-70 degree days and it is getting great gas mileage now. No changes on my end as far as driving, gas, mods, etc.

Warm air = leaner fuel to air mixture.

 

[Hauntedsoul]

I've seen reports of others getting poor gas mileage in their 5th Generation Rams. Mine is horrible. Has anyone else gotten a dealer to figure out what's wrong with this truck?
I've had my truck in the shop twice now for this issue. The Ram technicians are not able to find anything wrong with the truck.

It is a 2019 ram 1500 limited 4x4 crew cab with eTorque engine. Fuel economy is supposed to be 17 city, 22 highway.
I have the active suspension, and every option imaginable. 12" touch screen (which I would not recommend after living with it).
I only get 12-13 mpg city and 15-16mpg highway.
I have the 3.92 rear axle with anti-spin diff.
Eco mode almost never turns on in this new truck.
I have no performance options other than what the truck came with.
I have 12,500 miles on it now.

My 2016 ram quad cab with 5.7 hemi 4x4 got 20mpg or better consistently on the highway thanks to the eco mode.
I should be getting at least within 1 to 2 mpg of what is stated. My 2016 truck promised 20mpg and I got better.
I drive conservatively. I drive mostly highway. I don't idle the truck.
I thought the eTorque would be the way to go. I would not recommend it.
I've owned 4 of these trucks, each one better than the last, until this latest one.

I was given a loaner 2019 Ram 1500 with the Hemi, crew cab, same as my truck, but no eTorque option. I towed a trailer with that loaner truck for 250 miles and averaged 19.5mpg in tow/haul mode. It was the same year as mine 4x4 with the crew cab and hemi, and it got much better gas mileage. The only difference is mine has the eTorque, and this loaner did not. I can't get gas mileage that good in my truck, when it's empty and riding steady at 65mph on the highway. When I tow, I get 12 on the highway.

Something is wrong with my truck that is not wrong with all of them. Has anyone else experienced this and have you gotten it properly fixed? I'm at the point where I'm fighting with my dealer and I need to tell him what it is. He has put the OBD tester on it and says it has no codes.

couple things. 1 you will never get what the sticker says. That’s because they test trucks with out ethanol, they use pure gas. We can’t get that anymore because of the government and their subsidies blah blah blah all money laundering lol. 2) My truck was getting terrible gas mileage also when I took it to dealership where I have a friend he said the PCM had an update so he did it. After that I picked up about two more miles per gallon. I asked him why don’t he just flash all of them he said if the customer doesn’t complain Chrysler is not going to pay for it so they don’t do it.

 

[ferraiolo1]

Weird, mine gets what the sticker says, running pure fuel and 10% makes zero difference. Since you can get it at a lot of fuel stations. .


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[SnowBlaZR2]

you will never get what the sticker says.

 

[ferraiolo1]

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[MontFla]

7 gallons 87 Octane and 4 gallons of 93 octane st Costco

 

[NorthEdition2019]

Just signed up for this forum. Been looking on ramforum for answers, but can’t find anything either.

I’ve got a 2019 Bighorn North Edition CC. It’s got the off-road and towing packages. I bought it used with 21k on it. It’s not got 46k. Had some issues with a valve body in the trans and a leaking exhaust flange by the muffler. The exhaust issue seemed to be the main culprit the first time I had MPG issues. I was consistently getting 20-22mpg highway (both with this truck and my previous 2017 Express CC - See pic from trip to Myrtle Beach from MA a couple years ago.). Can’t really say what I was getting city, but combined, it was around 17.5-18. It was pretty sudden last September when my mpg went back down to 16mpg highway. 4 different dealers have looked at it and can’t find anything wrong, much like many of the posts say here. I have an unexplained “hiss” when the rpms rev during 1-2-3 gear shifts. No one knows what it is. Started after the valve body replacement in the trans in spring of 2020. Maybe I’ll take it to a transmission specialist. Still doesn’t feel right, especially during downshifts.

 

[theblet]

Weird, mine gets what the sticker says, running pure fuel and 10% makes zero difference. Since you can get it at a lot of fuel stations. .


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I usually get more than the window sticker says on e10

 

[Sanders]

My wife’s 2017 Bighorn crew cab with a 6’4” bed and 3.92 get 16 average mpg. My 2014 Bighorn quad cab with 305 tires was getting 15 mpg average. Traded in the 2014 for a 2022 Bighorn/Backcountry and am averaging 12.8! Kind of a bummer / disappointment.

 

[Neil McCauley]

It's possible. You just have to drive slow and like one of those Prius forums hypermilers. I think a tonneau cover helps, especially with a long bed. Also 93 octane, CAI and Borla exhaust (maybe?). If I didn't have towing mirrors, off road skid plates, AT tires and 3.92 rear diff mileage could be better.

Overall a lot of variables involved but driving style seems to matter the most.

 

[User_3336]

It's possible. You just have to drive slow and like one of those Prius forums hypermilers. I think a tonneau cover helps, especially with a long bed. Also 93 octane, CAI and Borla exhaust (maybe?). If I didn't have towing mirrors, off road skid plates, AT tires and 3.92 rear diff mileage could be better.

Overall a lot of variables involved but driving style seems to matter the most.

your MPG over 19.5 miles is really NOT a true representation(Perhaps doing down hill and on a flat highway over the 19.5 miles to yield 22.3MPG) How about driving 519.5 miles an report back then . . .