Here are my 5.7 crew max hand calculated figures. All city driving 17-18 mpg. All freeway driving 79 mph w/ air on 19- 20 mpg. These figures are all with 85 octane fuel. The truck has around 1000 miles on the clicker.
Possibility. It's like the tailgate up or down debate. It has now been scientifically proven that better aerodynamics are had by the tailgate being closed.
Quote:
Originally Posted by truth
Mythbusters!
YES! I saw that episode. All guys driving with your tailgates down, your'e actually not helping your MPG. That includes tailgate nets.
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2007 TUNDRA White 5.7 SB RC SR5
Last edited by BEO KIT; 07-26-2007 at 04:13 PM.
Reason: typo
Why are some people getting 19-20 mpg while I only get at best so far with 17.5-18mpg max with all highway driving. I drove from Minnesota to North Dakota last two week for a fishing trip and could only get 17.5mpg, maybe 18mpg with the cruise control set at 70mph/75mph. I am wondering what octane and also what state you are in for those getting 19-20mpg because it is probably the gas also that is giving you more mpg. Here in the midwest, MN, we have at least 10% ethanol added to our gas and I think that plays a big part in why I can not reach that 19-20mpg. I would be very happy if I am getting 19-20mpg though with my 5.7 SR5 TRD DC.
Any thoughts on this gas thing? I drive like an old man so it is not my driving habit that is preventing me from getting the higher gas mileage, I think the gas octane (87/89 octane for me), gas type (/w and /wo ethanol), and gas station has a lot to do with what you get in different part of the country. I mainly use Conoco, Holiday, and sometimes Super America for gas here in MN.
Why are some people getting 19-20 mpg while I only get at best so far with 17.5-18mpg max with all highway driving. I drove from Minnesota to North Dakota last two week for a fishing trip and could only get 17.5mpg, maybe 18mpg with the cruise control set at 70mph/75mph. I am wondering what octane and also what state you are in for those getting 19-20mpg because it is probably the gas also that is giving you more mpg. Here in the midwest, MN, we have at least 10% ethanol added to our gas and I think that plays a big part in why I can not reach that 19-20mpg. I would be very happy if I am getting 19-20mpg though with my 5.7 SR5 TRD DC.
Any thoughts on this gas thing? I drive like an old man so it is not my driving habit that is preventing me from getting the higher gas mileage, I think the gas octane (87/89 octane for me), gas type (/w and /wo ethanol), and gas station has a lot to do with what you get in different part of the country. I mainly use Conoco, Holiday, and sometimes Super America for gas here in MN.
I think that you are on the something with the ethnol thing. I live in an area where ethanol is a big player (Fort Worth) and I'm not seeing the high teens that others are reporting.
I'm 900 miles into my new truck and the best I've seen is 14.9. Though through 3 fill up it has gone up everytime, from a low of 13 and change.
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07 Tundra CM, Off Road Package, TomTom OneXL, 380+/- HP, and uses enough gas to piss off any bleedin' heart!
TundraHunter, I'm with you. Why am I getting 13.5 mpg and everyone else claims to be getting 18+. I have 650 miles and have filled 2 times with a calculated gas mileage of 13.7 and my computer says 13.5 mpg. My miles are strictly city, A/C on and have not yet passed 3000 rpm's during break-in period.
I will be towing my racecar this weekend so it I am anxious to see how it does and what kind of mileage I get. I hope everyone that says the gas mileage will improve over time are right.
Ethanol will yield less mpg. Here is how it worked in my chevy flex fuel saburban. Ethanol has a higher octane rating than unleaded. You would think that it would help the power and mpg being higher octane. Wrong, the trucks computer senses higher octane and then retards the timing to compensate. there for loss of power and mpg. This mite just be the reason for some of the Toyota's getting less mpg. I live in Idaho. We do not have Ethanol yet. I burn 85 octane only and get some pretty good mpg.
Here are my 5.7 crew max hand calculated figures. All city driving 17-18 mpg. All freeway driving 79 mph w/ air on 19- 20 mpg. These figures are all with 85 octane fuel. The truck has around 1000 miles on the clicker.
Did you mean 87 or are you really putting 85 in your truck?
TundraHunter, I'm with you. Why am I getting 13.5 mpg and everyone else claims to be getting 18+. I have 650 miles and have filled 2 times with a calculated gas mileage of 13.7 and my computer says 13.5 mpg. My miles are strictly city, A/C on and have not yet passed 3000 rpm's during break-in period.
I will be towing my racecar this weekend so it I am anxious to see how it does and what kind of mileage I get. I hope everyone that says the gas mileage will improve over time are right.
Stricktly city with the AC on, i'd say 13.x is decent, that's about what I have gotten when I drive city only for a tank. it takes a lot of fuel to get the truck moving!
If I'm just on the highway I set my cruise and go, just did 50 miles of all freeway and with the cruise set at 78 got 18.9mpg and it was still raising every couple of miles from when I accelerated to get on the freeway... this would drop very quickly as soon as I had to accelerate away from a few stopligts though...
You also have to remember that we live in Texas. And in Texas, we use the AC all summer long. And when we use the AC, it burns more fuel. The OP is up in Maryland where it is low 80s in the middle of the day. Not really AC weather when he is driving to/from work so he's probably not having to run the AC all the time. Thus the better gas mileage. If we run our trucks without AC, we can get 18-20 mpg. I've done it driving in the late evenings. But I am not about to do it driving around during the middle of the day. I'll wait till winter to get the mpg up.
Ahh yes. Winter in Texas. Those two weeks in January and early February.
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07 Tundra CM, Off Road Package, TomTom OneXL, 380+/- HP, and uses enough gas to piss off any bleedin' heart!
The A/C runs on Gas?! This is new to me. I'm a little skeptical about the A/C thing..Do you have proof??
Right now my Tundra is around 600 Miles on the ODO and has 13.6 mpg avg... It started at 11 when I first got it.
I've put the pedal down a few time, but now I'm trying to get my mpg up..I did the VSC off,shift it into 5th gear in the city and I'm getting 18-20 mpg easy..I'm just waiting for the 13.6 to go up
Also, I think all of the hilly interstates in North Louisiana contributes to my 13.6 avg. When the interstate is flat, i get 18-20 easy. When I'm driving up inclined interstate I get around 11-13 at 70-80 mph.
__________________ 2007 Black SR5 Tundra 4x4 5.7L V8
I drove from Arizona to California last weekend. With the air on, speed control set at 80 MPH, I was getting about 15.5 bucking a pretty good head wind. Once I got out of the Arizona wind, same speed etc the mileage went to 17.5. I will have to try the traction control/stability turn off as others have suggested. Does this help on the freeway without stop and go or just around town driving? The truck only had 500 miles on it at the start of the trip.
And guess what, the cam didn't break, tranny didn't fail, wasn't any more bumpy on Kalifornia freeways than other rigs, didn't shimmy and blew off a smart a$$ in a 5.7 Hemi 1500.
I love this truck
The A/C runs on Gas?! This is new to me. I'm a little skeptical about the A/C thing..Do you have proof??
Right now my Tundra is around 600 Miles on the ODO and has 13.6 mpg avg... It started at 11 when I first got it.
I've put the pedal down a few time, but now I'm trying to get my mpg up..I did the VSC off,shift it into 5th gear in the city and I'm getting 18-20 mpg easy..I'm just waiting for the 13.6 to go up
Also, I think all of the hilly interstates in North Louisiana contributes to my 13.6 avg. When the interstate is flat, i get 18-20 easy. When I'm driving up inclined interstate I get around 11-13 at 70-80 mph.
Do you reset your average MPG each time you fill your tank, or is that average since the track was new? If you don't reset it for each new tank then it will get harder and harder to get to move at all as you rack more miles onto the truck...
O.K. this is going to sound stupid but it is something I just discoverd. First 7,000 on the truck I was seeing in the 17-18+ MPG (this is good I was happy). Next I took a 5,000 mile trip went for Chattanooga to Colorado around and back. Had 2 Kayaks and 3 Mtn. bikes on the top of the truck. The fuel milage went down. This did not suprise me, but when I got back my milage stayed in the 14-15. I was a bit confused by this. Today I realized that I had put more air in the tires. I went from 28 ish to 36-37 psi. Had a load etc so I wanted to make sure I was coverd. Today I went back to 28ish and I am seeing my milage going up. Only put about 50 miles since I droped the pressure but I am quickly watching my average go up . If some one else out there has low milage and is runing 18" wheels I would like to see you try this and see what it does.
Do you reset your average MPG each time you fill your tank, or is that average since the track was new? If you don't reset it for each new tank then it will get harder and harder to get to move at all as you rack more miles onto the truck...
How do you reset?
__________________ 2007 Black SR5 Tundra 4x4 5.7L V8
Re: Good mpg!
but it is something I just discoverd. First 7,000 on the truck I was seeing in the 17-18+ MPG (this is good I was happy). Next I took a 5,000 mile trip went for Chattanooga to Colorado around and back. Had 2 Kayaks and 3 Mtn. bikes on the top of the truck. The fuel milage went down. This did not suprise me, but when I got back my milage stayed in the 14-15. I was a bit confused by this. Today I realized that I had put more air in the tires. I went from 28 ish to 36-37 psi. Had a load etc so I wanted to make sure I was coverd. Today I went back to 28ish and I am seeing my milage going up. Only put about 50 miles since I droped the pressure but I am quickly watching my average go up 
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