Anyone get 20 mpg with 4.0L V6 ?

I'm on my third tank of gas in my newly acquired 07 access cab 4x4 six speed. First tank was a disappointing 13.9mpg. 2nd tank was a bit better at 14.8. Heading out on a 400 mile road trip to Iowa on Thursday, looking forward to seeing what it will do with cruise set at 70mph.

For comparison's sake, my 94 4x4 4cyl averaged about 17-18 around town and 21-22 on the highway. Winter and 4WD would knock it down to 15, once hit 24 on a long road trip.

I'll report back on the new truck's mileage after we return from our trip, 800+ miles should be a good test. Of course as soon as I return my new TRD CAI and exhaust should be waiting for me, we'll see how that affects fuel economy. Probably will suck the first couple of tanks while I enjoy the added power and noise, but hopefully with a light foot on the pedal it will actually help increase mileage.

 

Last week put the balding 17's back on for summer, and did 1000 mi trip across NY,VT, NH, ME. Lucky only 5 mi was in snow. Nice to see 20+ again.

All midgrade
21 mpg way out, interstate, hwy, w/ aprrox 700 lb load on NY gas (not E10).
20.8 mpg NH driving generally 40-55 mph two lane roads, minimal load. E10 gas
18.8 mpg way back, interstate,hwy, big headwind, some snow, 1000 lb load, E10 gas.

 

09' short bed Double Cab with just over 1,000 miles on it. Took my first road trip - about 4 hours worth at 65-70mph and averaged 19.2 per gallon. I didnt think that was too bad, but hopefully it will improve a bit as the engine gets broken in.

 

I have 27K on my 06 and recently went on a trip to Augusta, Maine, and got 20.5, with my 6spd at an average speed of 70mph with a fair amount of driving at 75.
My truck is bone stock, with Mobil 1 in it. this is the first time I have gotten a steady 20 on a trip. Must be getting better with age.
Jeff 06,V6, 6spd, SR5

 

I have the ScanGauge II and can monitor MPG realtime, over a trip or tank of gas. I can get 22 mpg on the highway if I am careful, meaning cruise control on and not doing 80. If I set the cruise at 70mph and there are no hills, I will get about 23 mpg, if I can get behind a big truck I can even get better. If I drive normal I will get about 20 mpg on combined highway and city. If I am in a hurry, I will get 18 mpg combined. That is what the ScanGague is saying. I am 2WD DoubleCab running 89 octane fuel.

 

Just a side note!! Thanks god winter blend is gone...Damn gov't fricken with us. Leave my gas alone!!

 

I got 20.5MPG once on a trip down down to NYC, of course that was driving 55-70 the whole way. I found that if I drive 70-80 my MPG is generally around 17-18MPG.

 

nope

 

That's what I found as well, usually takes 2-3 tanks for it to be pretty accurate. What I found though is if you do a type of driving that you don't normally do (say you go on a 400 mile highway road trip when you normally do city driving), that will usually throw the ScanGuage off as well.

 

I just got right around 22 MPGs in Washington with 92 octane gas going between 70 and 75. It was all highway.



It's sad how the 92 octane gas in Washington is cheaper than 87 here.

 

Yep

My last tank was 21 mpg combined...

337 miles on 16 gallons of 87... I'm trying the 91 this tank full...

My truck only has 1300 miles on it, so I don't think that is too bad... Especially, living in the mountains at 9500 feet...

 

I just drove from Houston to Boston. Low was 19.6 and High was 21.7. All was on 87 octane, 70 to 80 mph. It is stock except for the AEF pro filter. I have 7k on the engine now and very happy.

 

Im averaging close to 19 with mixed driving in my 08 Dblcab Prerunner with a K&N short ram and my best at 21.5

 

Is it the opinion of most Taco owners that using higher octane equates to more mpg?
I am not sure I subcribe to that thinking, I have not tried that as I don't have long highway trips as often as others.
Jeff, 06,V6, SR5, 6spd, bone stock

 

a note on octane ratings.. octane rating basically translates to the amount of pressure the gasoline can be compressed to before it detonates. If you are using higher octane in a motor than the recommended fuel, you are basically wasting money. You may notice SLIGHT improvement going from 87 to 89, but unless you are changing the timing in your engine and changing out pistons, cylinder heads, and fuel injectors, you likely are just throwing some extra money away. Just my opinion....

 

I run 87 in mine. For the hell of it I ran 89 for about a month. Yeah, it gave me slightly better MPG and a few miles (maybe 50?) more per tank, but the fill up cost more so it was a wash. According to my spreadsheet, the cost/mile was the same for 87 and 89. Assuming the same for the higher octanes as well. I mean, you get slightly better MPG and slightly more miles per tank, but not enough to offset the higher price.

Now, if you were towing or hauling a big load that might be different. I notice a bit more power and torque with 89. Never tried 94 or whatever we have around here. With the VVTI in the engines they're basically tuned down to run on 87 without detonation. So if you run 91 or higher you get the full rated power/torque of the engine. Which might be worth the additional cost when you're towing and want to get that load up to speed, or maintain speed easier.

 

After years of running 89 or better, at $4 last summer and $.30-.40 more for each octane level, I ran 87 for a few months.
I lost -.3 (unloaded commute) to -.5 mpg (loaded/towing), not lot, but was consistent. I gained a louder pinging esp at low rpms. When prices dropped, and back to .10 octane upgrades, I went back to what she likes.

Since you have a 6spd. Here'e the 'test' imo. 6th gear flat rd 35-40 mph. Punch it on a tank of reg, then premium. See if you notice a difference in sound and power. I do. If you don't, save your $, and stay w/ 87.

 

I ran nothing but regular 87 octane for 3 years and averaged 13.4 on short trips around town, 21.5 on the highway, and 10.4 when towing. I recently bought a bigger travel trailer and decided to try running premium 91 octane for a while to see if it made any difference. My fuel milage increased over the next couple of tanks to where I'm now getting 15.8 on short trips around town (these short trips around town are driven by my wife and she consistently drives to the same places) and 22.5 on the highway. Towing has increased to 11.87 on my last trip. Not much difference in power but that's OK. I'm happy with the power this engine delivers.

Markk