1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

MPG

Discussion in '80-Series Tech' started by Jim_Phillips, Apr 14, 2003.

  1. Jim_Phillips

    Jim_Phillips

    Messages:
    723
    Likes Received:
    1
    Joined:
    Mar 27, 2003
    Location:
    Ingerland
    Revisiting this old favourite one more time...

    I always calculate my MPG and was surprised to discover a month ago that it was only about nine to the US gallon. That figure was for running on LPG.

    This time I have run through a tank of Petrol and done the calculation again. I now know that I get 12.5 to the US gallon. How does that sound? I did a mixture of driving - 80mph on the motorway for about a third of the time, stop start / town driving for a third and the rest was driving between 40-60mph on 30 mile trips.

    If 12.5 is 'within range' then maybe I need to look at why LPG is returning such a poor figure.

    Cheers, Jim :beer:
     
  2. cruiserdan

    cruiserdan SupportingVendor Emeritus Supporting Vendor Moderator

    Messages:
    20,603
    Likes Received:
    2,981
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    Jim,

     That is consistant with what I get.............Dan.


    I was under the impression that MPG dropped when running on BBQ fuel....... :dunno:
     
  3. Scamper

    Scamper

    Messages:
    1,460
    Likes Received:
    2
    Joined:
    Mar 28, 2003
    Location:
    Somewhere in NJ
    I guess I should feel really good...I get in the range of 15-16mpg unless I'm towing my camper or boat in which case it might go down to about 14.

    Tom
     
  4. Gumby

    Gumby Supamod Staff Member s-Moderator

    Messages:
    11,778
    Likes Received:
    307
    Joined:
    Dec 13, 2002
    Location:
    Knee deep in hookers and gin
    For a mix of driving, that is pretty consistant to my figures too. When I was commuting, I got closer to 14. Now that I'm back to 4 miles to work it drops as low as 8 in the winter. At almost $2 a gallon it makes me sad, but not sad enough to drive the wife's ECHO. At 39 MPG and 4K per year we fill the tank on that about every 6 weeks.
     
  5. Jim_Phillips

    Jim_Phillips

    Messages:
    723
    Likes Received:
    1
    Joined:
    Mar 27, 2003
    Location:
    Ingerland
    15-16 mpg - well, I might get that - but we don't have the long roads to cruise down ..

    Dan, you're right. 9 mpg is on BBQ fuel - 12.5 is 'gas' (petrol)

    At lease I know that it's running OK on one fuel.

    Thanks, Jim :beer:
     
  6. Brentbba

    Brentbba Former Golfer SILVER Star

    Messages:
    9,824
    Likes Received:
    321
    Joined:
    Mar 27, 2003
    Location:
    OC, CA
    Pure intown driving - 12mpg, mixed commute driving - 14 mpg. Recent trip all freeway I got close to 18mpg! With scout trailer - flush money down the toilet!!! :p
     
  7. Beowulf

    Beowulf

    Messages:
    12,534
    Likes Received:
    30
    Joined:
    Mar 27, 2003
    Location:
    Somewhere in the foothills...
    Jim,
    I haven't calculated the MPG for the past 6 months but with corrected speedo, 33" tyres, stock 4.10 gears, OME 50mm, synthetics (exc A/T), recent tune up, 40psi, close to stock weight, pre-HD F&R bumpers, regular unleaded petrol, it got 12.5 MPG consistently in city driving at 6000'. I typically drive like an old grandma according to my wife.

    Cruising at 70MPH, no A/C, long hauls, light foot, it will get  16+/- MPG.

    Tom,
    I have heard the S/C gives about the same MPG as pre-S/C but most people don't see it because it's hard to keep the foot out of it. Are your mileage figures for highway or city?

    -B-
    '97 FZJ80
     
  8. tenncrusher

    tenncrusher

    Messages:
    168
    Likes Received:
    0
    Joined:
    Mar 28, 2003
    Location:
    Nashville, Tennessee
    All stock, grocery getter (but it does have the lockers), around 14 mpg city (with commute of 8 miles each way interstate and secondary). Interstate driving 16 mpg at 75-80 on my '96 crusher.

    Will
     
  9. landtank

    landtank SILVER Star

    Messages:
    18,423
    Likes Received:
    596
    Joined:
    Mar 27, 2003
    Location:
    Groveland MA
    B, you forgot to mention whether that was with a head wind or tail wind.

    rick
     
  10. Scamper

    Scamper

    Messages:
    1,460
    Likes Received:
    2
    Joined:
    Mar 28, 2003
    Location:
    Somewhere in NJ
    Beo: this may seem odd, but I started out very carefully measuring MPG on my cruiser since buying it, partly because of the fear it would be bad, but partly becuase I'm anal retentive about this sort of thing :slap:

    My milage is based on a combination of local and highway driving. I'd guess about 75% 25% local to highway. I realize based on the other quotes here that that sounds unreasonably high, but what can I say? It's what I get. I use a Palm Pilot to record all fill-ups and gallons/costs. I'm not just halucinating. Maybe I just got one of those "lucky" trucks?

    LandTank: You do have a point about the SC. It's hard to lay off...especially when some a-hole of a SUV (like a V-10 Yuckon) comes alongside and trys to blow you away--it really happend last weekend without any provocation on my part...always fun to leave them in the dust. Hard to resist that much fun.

    But knowing that the SC is there also makes me more aware of the fact that the increase in power = (potential) increase in $$$, so I try to behave as best I can. I'm sure the better half doesn't even consider it and just lays into the pedal. :D But no matter how much I try, I can feel the SC kicking in even at realtively modest throttle pressure, and moment to moment, it does feel good to go quicker.

    Even with all that, I still get good (?) milage. I don't really see a difference between stock and SC in MPG. But time will tell. I just installed the SC in December, so I've yet to have the joy of pulling a trailer with it--which is why I bought it in the first place (I'm in NJ so Scamping season begins this/next month). I plan to be equally anal about recording MPG with the trailer to see if, as hoped, the SC would improve both power and MPG while (or "whilst" for Jim) towing. I'll let you know later this year.

    Cheers,

    Tom
     
  11. cruiserdan

    cruiserdan SupportingVendor Emeritus Supporting Vendor Moderator

    Messages:
    20,603
    Likes Received:
    2,981
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    Tom,

    I have found my "post blower" towing fuel economy to be about 10% better than naturally aspirated. This towing a 3700 lb boat, CGVW about 10,000 lbs +/-

    Regards.............Dan :beer:
     
  12. Beowulf

    Beowulf

    Messages:
    12,534
    Likes Received:
    30
    Joined:
    Mar 27, 2003
    Location:
    Somewhere in the foothills...
    Rick,

    If I decide to start tracking it again I will take note of wind speed and direction relative to travel.

    :slap: Thanks for pointing out another variable that I missed.

    (Woody, we need the Jester.)

    -B-
     
  13. mts

    mts

    Messages:
    118
    Likes Received:
    0
    Joined:
    Mar 28, 2003
    I get around 12 normally (commuting). I get about 14 on the interstate and 9-10 when towing. I likely drive too fast and could most likely get a little better if I tried. But what fun would that be?? :dunno:

    MIke
     
  14. upcruiser

    upcruiser

    Messages:
    334
    Likes Received:
    0
    Joined:
    Mar 28, 2003
    Location:
    Marquette, MI; Jackson, WY
    I get 10-12 around town and usually aound 13-14 if I'm really taking it easy on the highway. I've gotten as bad as 6 towing a trailer and 7 not towing but with a good head wind on a freeway in Montana. :eek:
     
  15. ParadiseCruiser

    ParadiseCruiser

    Messages:
    620
    Likes Received:
    0
    Joined:
    Mar 27, 2003
    Greetings Jim -

    Both "Elsie" and "Elmer" - 97s as you recall - get about 13mpg in and around town, on average, and I once got 17.9mpg out of Elsie on the open road (tank after tank on the highway for 1000 km +) driving under 60mpg, just to see what a reasonable maximum would be.

    Cheers, Ron

    PS: No holes as yet... Looking for scrap sheet metal to practice on :D

    R -
     
  16. BigMac

    BigMac SILVER Star

    Messages:
    216
    Likes Received:
    0
    Joined:
    Mar 27, 2003
    Location:
    Lompoc, CA
    I finally did the math on last week's cross country - 3578 miles at 15.48 MPG overall - I can live with that! Max use of cruise control, usually set at the speed limit + 5-8. Serious headwinds across Kansas, Colorado and Arizona kept us frequently running with the O/D off, and occasionally as slow as 60. Worst leg was 236 miles at 12.4 mpg. Best was a short downhill leg into Glenwood Springs - 21.3 mpg, but for only 91 miles.
     
  17. cruiserdan

    cruiserdan SupportingVendor Emeritus Supporting Vendor Moderator

    Messages:
    20,603
    Likes Received:
    2,981
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    "21.3"

    &nbsp:DO NOT OPEN THE HOOD..............TOUCH NOTHING. :bow:
     
  18. T Y L E R

    T Y L E R

    Messages:
    2,598
    Likes Received:
    2
    Joined:
    Mar 27, 2003
    It's not often I laugh out loud when at the pc . Nice one Dan ! :G :D

    T
     
  19. BigMac

    BigMac SILVER Star

    Messages:
    216
    Likes Received:
    0
    Joined:
    Mar 27, 2003
    Location:
    Lompoc, CA
    Yeah - I hooted when I punched the numbers too. First guess was "lighter wallet effect" since I had stopped off at Slee's the afternoon before - but I rejected that explanation when I realized the heavy OME boxes in the back caused a net weight increase ;). Got to be the drop from Silverton to Glenwood Springs.
     
  20. tenncrusher

    tenncrusher

    Messages:
    168
    Likes Received:
    0
    Joined:
    Mar 28, 2003
    Location:
    Nashville, Tennessee
    Just got 15 mpg out of a tank plus 16 gallons of very mixed driving. I am pleased. I do not think I am going to mess with anything.