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Discussion Starter · #1 ·
I drive the I-5 from Oceanside to San Clemente, CA daily(about a 16 mile stretch). I have been getting around 19-21 MPG, but I hit 22.4 the other day. I just keep it at 65 and in the far right lane the entire time. Seems kind of lame to drive that slow, but when gas is so expensive the way it is
My truck is stock, the bed is usually empty, and the cab has myself and a bag of gym clothes, that's about it. So I am not carrying much. and I am using Shell 89 Octane fuel
I tried loading a picture, but the dang thing won't work.
 

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Nice. How many miles do you get out of a tank? I've driven @ 72 MPH with the cruise control on and got over 20 mpg's. but it took a few hundred miles of driving like that before it went up that high. I average 16-17 mpg's overall but if my wife drives it she gets over 19.
 

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It seems to me that how I drive the first 15 miles makes a big difference. If I go from the pump to stop and go city driving my MPG are around 15. If I go straight from the pump to the highway I can stay around 17 or 18. I live in San Clemente and drive into Camp Pendleton (las pulgas) almost everyday, I keep cruise control at 70 the whole time I'm on the freeway.

Ski, do you work in San Clemente? I'm always down for meeting up for a beer and truck talk, hit me up.
 

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Sweet! I've got an average of 22.5mpg (calculated) on a trip to Jacksonville and back at about 65mph(wife actual drove and was following me in a uhaul). I usually get about 20 mpg on the hwy at about 70mph.
 

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With 20" chrome clads and 275/65/20 Wrangler AT/S 8 ply, I can manage 13/17.5, with stock 17" aluminum rims and 265/70/17 Destination A/T 6 ply, closer to 14.5/19! Almost not worth the bling! Ok it must be cuz I just put the 20's back on a week ago, watching the mileage drop every day!
 

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Discussion Starter · #7 ·
Vista to San Mateo is a haul.
I use to have an 07 Big Horn with a 4.7, and was working in San Mateo. I use to drive about 70 and get 18 MPG

I now work at SOI. As an instructor I am either working late at night ranges, or I am off real early because I don't have a class to teach. But I am always up for a beer! Pizza Port is great. Don't go out in San Clemente too much.
 

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Interesting that 70mph gets 18mpg, which is where I normally sit. But 5mph slower will put mpg at 22. I'm going to start doing that from now on and see what I can get.

I came close to re-up'ing to be an instructor at SOi. I've got a bunch on friends that work up there, or used to. Most have gone back to the the fleet or gotten out.

I live within walking distance of pizza port in San Clemente. Anytime you're up there give me a buzz 801-842-8854 (Jim)
 

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I have a 2010 hemi crew cab with 24's and ram box... I drive about 300 miles per week or more and get like 14 mpg avg. I don't have a heavy foot, but avg 80 on the highway and speed limit in the city. 250 miles of the 300 every week are on the highway. Any suggestions to increase my mpg? I've heard you can. Us a chip for this?
 

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Well my friends, when you fill up your tanks either this week or next, you will be getting Summer Blend gasoline at the busiest stations.

I talked to a SoCal Distributor driver at a Am Pm Friday, he picked up his load at the Mission Valley Tank Farm down by the Stadium, he didn't know if the load that he was dropping was Summer or Winter Blend, but he did know about the dates of the mandated Blend change. After May 1st, the gas stations can only receive summer blend. Better MPG with Summer Blend
 

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My MPG experiences

My MPG experiences
I have noticed a few people comment on their mpg being better at certain speeds. I have 20,000 miles on my ram and this is what I have experienced so far:
I drive about 60 miles each day. Of that about 50 highway and 10 city. My truck has stock 17 inch rims with stock tires and 3.55 gears. It's the crew cab with the 5 foot 7 inch rambox bed.
I make sure that every time I fill my tank up I reset the MPG average, so all of these numbers are over an entire tank of gas.
Daily commute MPG's per tank
Average-20.0
Best-22.8
Worst-16.4
Long trip commute MPG's per tank
Best-24.2
Worst-22.2
Things that help me out:
-Speed!!!! I have found that if I go over 60 mph the MPG's drop. The best speed for my truck is right around 55mph.
-Coasting as much as possible, meaning do not ride close to people so that you need to be on the brakes a lot. Each time you hit the brakes, you waist gas. I try to leave plenty of space in front of me so that if traffic backs up I can slowly coast to a stop.
-keep that little eco light on as much as possible. (shuts off 4 cylinders) I have noticed that once I get up to speed I need to let off the gas slightly so that the eco light comes on. Then I can maintain my speed with the light staying on.
This is what I have experiences personally with my truck. Every truck will be slightly different. I hope this helps someone with saving gas. Good luck!
 

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I can sometimes drive at 120km/h in ECO mode. Obviously not up hills or anything but on the right road you can do it for awhile.

Dont remember reading anything about people driving that speed in ECO mode? Or if they have expermiented with the mileage. It must be better to run on 4 cylinders at 120 then 4 at 100??

From what Ive found you cant go more then 125km/h in ECO mode it will automatically kick you out of it.
 

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I tested out the eco light once and found that it came on even at 90 mph (145kph) when I let off the gas. From what I understand it will come on when the motor is not under any load. My guess is that the wind resistance at the higher speed puts too much force on the truck for the eco light to stay on.

On my guages I go to the fuel economy screen and watch where the MPG bar is. I try to keep it all the way to the right (30MPGs)
 

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I've been keeping my cruise control at 64 or 65mph for the last few weeks and have found that my gas mileage has improved. When I was cruising at 70 I was staying around 17-18mpg, now that i stay around 65 I getting around 18-20mpg.
 

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10.6 average on a tank of city driving!!!!!! yeah baby!!!!!!! 14-15 on the highway! hell yeah! lol
 

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I'm at about 12mpg city and over 20mpg hwy. Crew Cab 4x4 w/3.92's. These Hemi's really suck a lot of fuel getting up to speed from a stop, in a city that likes installing stop lights not so good, lol. I have read that mileage improves with a few miles on the clock. I'm at 7500km (4500 miles) so we'll see.

I was told 87 Octane which is what I've been running, will 89 improve mileage?
 

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89 octane may very slightly improve mpg. It won't be huge though if it does.
 
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