Real world mpg's

[MattL]

Are you sure your Scan Gauge is set up properly? 17/20 is awfully high for an 80 period, let alone one of 33's with a bull bar. Have you ever calculated it based on your trip meter/GPS?

To the best of my knowledge I have set it all up correctly with the initial fill ups and tank size. I generally keep it around 55-60mph on the freeway and find areas to draft behind larger vehicles. The 17mpg is a mix with freeway but the city alone is terrible ~11-12mpg. Being such a heavy car I feel like once you're up and running on the freeway its possible to find the sweet spot and use inertia to your advantage.

I'll check out some more manual numbers using the trip ODO and report back!

:edit: After researching over on the MUD forums it does seem like my mpg average is on the high side although 18mpg freeway is possible with a tuned right foot.

 

[Flagster]

"Up and running" on 89s from Tuba City, AZ to Flagstaff, AZ tonight in some of the worst wind I have seen here in N. AZ I bucked 50 mph headwinds and averaged 9.5 mpg for the 80 mile drive...gaining about 2500ft...the mileage is not so much my complaint of these trucks...I knew it would be poor...the fact that maintaining 55mph in this wind was a chore...a toyota v8 or diesel swap is not too far down the road...I can't imagine what a 3fe would have been like...

 

[DirtAddictLC80]

I have an 1997 80 series wearing 285/75R16 Mud Terrains (33 inch tires), 2 1/2 inch lift, full length roof rack, and a few hundred extra pounds of armor and gear.

I use a scan gauge that has been corrected for tire size, and when looking at estimated fill-up to actual it is pretty accurate.

When keeping it around 65-68 mph on the highway, flat to rolling hills, I get about 15 mpg avg. Around town, I am looking at around 11-12 avg.

Considering the notoriously poor gas mileage of the 80 series, along with the changes I've made to the truck, I feel pretty happy with what I'm getting on the highway. I'm not too concerned with the around town mpg as this is not my DD, and my trips consist mostly of highway miles with a lot of off road time mixed in. Someday, when the engine is finally ready for a rebuild, I'll swap in a diesel instead to make my rig better on the highway and a fuel efficient monster when wheeling. :smiley_drive:

For my next set of tires, I am considering all terrains in 285/75R16s...maybe with these I can squeak out 16 mpg on the highway! :Wow1:

 

[Mountainhound]

Well pulled the trigger on a 94 yesterday with 155k miles, center diff lock, clean in and out. Runs great wife drove it the 200 miles home and loves it. Couldn't help myself so today me and my youngest daughter (16) took it for a test drive through the woods drivers side front tire broke through some ice and next thing I know I'm stuck. Wound up having to get my tacoma in there and pop it out the hole. Thats when the tear happend in the running board oops. Oh well they were comming off anyway just should have done it befor heading out. But never had much patiance.

 

[Flagster]

At least you gave yourself a good reason to get them off...nice truck!

 

[yohavos]

At least you gave yourself a good reason to get them off...nice truck!

x2 - the interior looks great!

 

[Mountainhound]

Thanks guys!! I removed those running boards today and called toyota to get the mud flaps, I need a better plce to get them than from the local toyota dealer, they want 80 or 90 a piece:Wow1: Yea also showed the wife we need a winch so when I can afford to she will be all for it.

One of the reasons it's so clean inside it did have a sunroof leak that the po fixed then pulled the carpet and then roll on linered then put some sound deadning stuff and then the new carpet.

 

[Flagster]

Thanks guys!! I removed those running boards today and called toyota to get the mud flaps, I need a better plce to get them than from the local toyota dealer, they want 80 or 90 a piece:Wow1: Yea also showed the wife we need a winch so when I can afford to she will be all for it.

One of the reasons it's so clean inside it did have a sunroof leak that the po fixed then pulled the carpet and then roll on linered then put some sound deadning stuff and then the new carpet.

nice...that is a lot of work...and pricey...

 

[Mountainhound]

nice...that is a lot of work...and pricey...

Thats what I thought.

 

[MattL]

Are you sure your Scan Gauge is set up properly? 17/20 is awfully high for an 80 period, let alone one of 33's with a bull bar. Have you ever calculated it based on your trip meter/GPS?

I wanted to follow up with this. After a few long road trips and daily commuting I'm averaging 13-15mpg mixed city/hwy and 18-19mpg strictly hwy keeping under 65mph. Looks like the scangauge was reading on the high side before.

 

[cumminscruiser]

Gas milage

Around town 22 on the freeway 25 mpg. 1985 FJ60 Cummins 6BT5.9, BTW my 71ish FJ40 with a Vortec V6 gets 15 to 18 mpg. My FJ60 spankes it. go figure.