My MPG Experiment

[warpdriv]

I did this in my Jetta with good results and thought I would try it in the 80. So after checking all the tires I filled up with gas. All week I did
* Not let the RPMs get over 3k when starting off from a light.
* I set the cruise control on 60
* No AC in the morning. AC coming back from work

I got 17.5 MPG at 342 miles on 1 tank. Like the saying goes, "Slow down, you're already in Austin."

[Sea Knight]

Originally Posted by warpdriv

I did this in my Jetta with good results and thought I would try it in the 80. So after checking all the tires I filled up with gas. All week I did
* Not let the RPMs get over 3k when starting off from a light.
* I set the cruise control on 60
* No AC in the morning. AC coming back from work

I got 17.5 MPG at 342 miles on 1 tank. Like the saying goes, "Slow down, you're already in Austin."

Jeff, I routinely use the same procedures you describe when driving our 80 and average 17-18 mpg, sometimes as much as 20 mpg on road trips. When the wife drives it, which is most of the time, she's lucky to squeeze out 13 mpg. She denies that there's any difference in our driving styles, yet has no explanation for the 30+% improvement in fuel economy when I drive.

[krookedpandas]

Driving in the city, I usually shift at 1300 rpms keeps my mpg reasonably around 15

[BrettinSanAntonio]

Interesting. I think I might try this too just for kicks. I'll be amazed if I can break 13mpg with all the additional weight on my truck.

[mmw68]

Maybe we should all just do some Hypermiling?

Take it easy and get 30 percent better mpg - May. 9, 2006

[tucker74]

Unfortunately this only works for the later model 80's with the A343F transmission, I tried the same with mine (A442F) and only saw 13MPG :(

Tucker

[BrettinSanAntonio]

Originally Posted by tucker74

Unfortunately this only works for the later model 80's with the A343F transmission, I tried the same with mine (A442F) and only saw 13MPG :(

Tucker

Just curious - why would the transmission make a difference?

[tucker74]

Originally Posted by BrettinSanAntonio

Just curious - why would the transmission make a difference?

Gear ratios & weight:

FZJ80 A442F 8-92 to 12-94
1st 2.950:1
2nd 1.530:1
3rd 1.000:0
OD .765:1

~250lbs.

FZJ80 A343F 1-95 to 1-98
1st 2.804:1
2nd 1.531:1
3rd 1.000:1
OD .753:1

~125 lbs.

Tucker

[madoc1]

mark did you get your 3fe rewired? is so is there a link to the job? jim in spicewood

[mmw68]

Hi Jim, How are things in Spicewood? Yes the 3FE FJ40 is doing well. You can check out the progress here:
http://forum.ih8mud.com/40-55-series...oms-build.html

[peepers]

just drove 4 adults + luggage + 2lbs of Kreutz's bbq to Houston for the Red Sox game. Drove the 80 with 35" M/Ts between 75 and 80 mph and got 11.9 mpg. Not exactly hypermiling...