2016-03-29 |
233.6 |
18.807 |
$1.949 |
12.42 |
"" |
2016-04-12 |
283.1 |
20.309 |
$1.889 |
13.94 |
"" |
2016-04-26 |
451.6 |
31.874 |
$1.889 |
14.17 |
"" |
2016-05-06 |
389 |
27.902 |
$2.079 |
13.94 |
"" |
2016-05-20 |
404 |
29.705 |
$2.059 |
13.6 |
"" |
2016-06-10 |
450 |
33.302 |
$2.229 |
13.51 |
"" |
2016-07-05 |
361 |
27.763 |
$2.029 |
13 |
"" |
2016-07-21 |
436 |
31.882 |
$1.959 |
13.68 |
"" |
2016-07-29 |
348 |
24.897 |
$1.879 |
13.98 |
"" |
2016-08-15 |
375 |
29.107 |
$1.939 |
12.88 |
"Last set with 225/75/15 tires, battery died so mileage is off" |
2016-08-25 |
390.3 |
28.739 |
$2.069 |
13.58 |
"First with new 285/70/17 tires, ~33"" diameter 15.81% gear reduction." |
2016-09-07 |
399.3 |
29.171 |
$2.039 |
13.69 |
"" |
2016-09-14 |
450.7 |
31.446 |
$2.039 |
14.33 |
"Replaced driver's 3 point towing mirror with 2003+ paddle blind-spot style on 9/11 and removed driver's side FM antenna whip." |
2016-09-21 |
364.2 |
26.076 |
$2.009 |
13.97 |
"Removed passenger mirror and antenna, added temporary camera install 9/16. Lots of city driving this tank, possibly low FE." |
2016-09-30 |
442.9 |
30.9 |
$2.009 |
14.33 |
"Subtracted 1 gallon due to doing 10x 1/4 mile runs @ estimated 0.1 gallon per run at WOT." |
2016-10-05 |
207.65 |
13.434 |
$2.009 |
15.46 |
"Corrected mileage calibration of 15.861% over due to larger rear tires." |
2016-10-30 |
461.5 |
30.073 |
$2.129 |
15.35 |
"Finished driver's front fender skirt 10/27, reinstalled air silencer 10/21 - significantly better throttle response with it than without." |
2016-11-10 |
404.6 |
28.57 |
$2.029 |
14.16 |
"Lots of coasting down in neutral (maybe more fuel used than coasting down in drive) and idling in neutral at stop lights. Idle in neutral is ~1000rpm no load vs in D at ~750-800rpm. Possibly higher fuel use in neutral?" |
2016-11-17 |
411 |
30.564 |
$1.929 |
13.45 |
"Lots of idling and low speed during 50 mile relay race. Unusually low mpg because of this. Finished driver's bellypan 11/10 axle-to-axle." |
2016-12-13 |
576.7 |
41.824 |
$2.109 |
13.79 |
"Failing fuel pump = 25psi pressure. Replaced on 12/10, now 45-50psi and good idle and vastly improved performance." |
2017-01-02 |
394 |
29.76 |
$2.259 |
13.24 |
"Driven while building rear shell, lots of miles with gurney flap rear end and partially completed shell. Basic shape done 12/28, still missing passenger side bondo and upper lip radius." |
2017-01-10 |
398.7 |
29.321 |
$2.299 |
13.6 |
"Noted really bad non-drafting vacuum at 70-80mph, in the 6-8inHG range. When drafting large vehicles it was consistently 10-15, and usually >12inHG. New wider front wheels are probably a big contributor, as they stick out from the OE fenders. Time for an aero project!" |
2017-01-20 |
429.4 |
31.401 |
$2.219 |
13.67 |
"Finished front side of driver's wheel 1/15. Rear side is open and unfinished. Still very low mpg, started dropping immediately after starting bellypan, still very low even after replacing fuel pump. Hard to tell what is causing the low mpg." |
2017-02-06 |
366.9 |
28.001 |
$2.159 |
13.1 |
"Driver's side skirt complete to back side of rear wheel, finished 2/1. Still needs smoothing and contouring on underside and to blend panel to panel around driver's door. I'm nearly 100% certain that the rear shell extension is a big net negative to fuel economy and drag." |
2017-02-14 |
428.4 |
29.42 |
$2.169 |
14.56 |
"Driver's side skirts finished from front bumper back to 1/2 way around rear wheel. Noticeable 1.1mpg improvement over previous 3 fillups, around a 10% improvement in fuel economy!!!" |
2017-02-24 |
425.9 |
30.387 |
$2.159 |
14.02 |
"Installed giant class IV hitch, hangs waaaay out in space under the rear bumper. Without fairings I'd guess this is 0.5mpg worse. Started on the driver's rear fender flare on 2/17, mostly done except for sanding and paint by 2/27." |
2017-03-13 |
447.7 |
32.771 |
$2.119 |
13.66 |
"Finished driver's side to bumper on 2/26, haven't touched the hitch yet. The hitch is probably around 0.5mpg penalty, estimated." |
2017-03-20 |
424.6 |
30.995 |
$2.099 |
13.7 |
"Cut off part of the rear shell on 3/10-3/12, even with tuft testing and a camera hanging out in space...same mpg! So the old shell is likely a net negative and should have been removed a long time ago. Still lots of inverted flow in the top 4-5"" of taper, probably either too much taper causing separation or too much flow over the top causing a swirl." |
2017-03-28 |
389.2 |
27.107 |
$2.139 |
14.36 |
"Removed the center top ""taper"" section on 3/21 (same day as refill), gained about 0.66mpg from removing it!" |
2017-04-03 |
470.3 |
32.568 |
$2.179 |
14.44 |
"Added back in semi-tapered (flat at edges) center section on 3/29, did 3 hour highway Croom Fool's Run drive. So mileage is not on the same route and schedule as normal." |
2017-04-24 |
409.6 |
29.695 |
$2.299 |
13.79 |
"Significantly worse with new taper, but also fixed the A/C in the middle of the tank on 4/18 so extra idling time and A/C power use on highways. Running 1 more tank with A/C use and then 1 without to see if that's the difference or the result is the taper's fault." |
2017-05-04 |
420.7 |
30.216 |
$2.279 |
13.92 |
"No aero mods, ran the fixed A/C about as much as last tank. Will run next tank with no A/C to see if the drop was due to the 20-30 deg departure => 12deg departure, or due to A/C use." |
2017-05-24 |
417 |
29.042 |
$2.149 |
14.36 |
"First non-A/C tank with 12 degree rear taper. Included ~50 miles @ 80mph with no drafting, while rushing to the airport." |
2017-06-02 |
371.1 |
25.482 |
$2.169 |
14.56 |
"No A/C use, more consistent with normal weekly driving schedule. Average 14.38mpg with larger side taper, 14.46mpg with 12 degree taper, 13.85mpg with 12 degree taper and A/C use" |
2017-06-26 |
389.1 |
28.222 |
$2.009 |
13.79 |
"Back to normal highway speeds, estimate ~0.5-1mpg improvement by going ~60mph instead of 70-80mph." |
2017-07-08 |
354 |
24.813 |
$1.959 |
14.27 |
"100 miles with the center taper, then removed it to just have the side tapers. Significantly better mpg without it!" |
2017-07-17 |
407.7 |
26.745 |
$1.959 |
15.24 |
"Without center taper. At 240 miles, cut the side tapers down to only 4"" back from original body contour. Best MPG in months!" |
2017-07-25 |
392.7 |
25.064 |
$2.099 |
15.67 |
"No aero changes, but driving slow due to overheating problems. New pump, thermostat and radiator cap haven't fixed it. Derale 18217 fan and new radiator going in 7/26." |
2017-08-04 |
424.8 |
30.299 |
$2.219 |
14.02 |
"Fixed radiator cooling problems, but still using 180F thermostat and clutch fan. Horrendous traffic jams, likely lower MPG due to that." |
2017-08-16 |
361.3 |
25.019 |
$2.159 |
14.44 |
"No changes, just another tank with no significant traffic jams." |
2017-08-27 |
401.4 |
27.813 |
$2.219 |
14.43 |
"Back to original 195F thermostat from 180F @ 87 miles into the tank. Lots of city miles, probably dragging the average down a bit." |
2017-09-05 |
318.8 |
21.65 |
$2.659 |
14.73 |
"Consistent driving again, 14.73mpg shows about a 2% increase with 195F vs 180F thermostat. Not really significant on a big van like this." |
2017-09-21 |
467.5 |
31.94 |
$2.639 |
14.64 |
"Normal driving, no changes from previous tank. Stable at about 14.7mpg." |
2017-10-04 |
507.1 |
34.118 |
$2.429 |
14.86 |
"Removed the rest of the rear shell attempts @ 5 miles in. Returned it to the stock contours, with slightly extended sections near the new taillights. MPG basically the same, but noticeably less stable in crosswinds and when trailing behind semis." |
2017-10-16 |
494.4 |
32.748 |
$2.219 |
15.1 |
"No changes since last tank, but some significant distance <60mph near Clermont." |
2017-10-23 |
406.4 |
29.192 |
$2.219 |
13.92 |
"Lots of idling in traffic, heavy traffic jams, sitting at races, etc. Ignore this tankfull." |
2017-11-03 |
453 |
30.343 |
$2.249 |
14.93 |
"No mods, just another tank with regular schedule." |
2017-11-22 |
439.6 |
32.064 |
$2.339 |
13.71 |
"Lots of fast driving to and from airport, no mod changes. But no drafting either." |
2017-12-03 |
481.2 |
33.911 |
$2.319 |
14.19 |
"Still airport driving fast, but getting back to normal schedule. No A/C use this tank due to lower temps." |
2017-12-11 |
397.8 |
25.922 |
$2.279 |
15.35 |
"No aero changes, back to normal schedule. No A/C use due to winter coming to FL!" |
2017-12-28 |
468.9 |
31.49 |
$2.299 |
14.89 |
"Started building passenger front tire flare on 12/17, mostly done with the rear flare by 12/29. Only single inner width layer between the wheels, nothing attached to the doors yet." |
2018-01-11 |
425.5 |
29.263 |
$2.389 |
14.54 |
"Lower MPG due to being in the middle of passenger skirt construction. Filled at exactly 0.25 tank indicated, which is actually about 0.17 tank." |
2018-01-25 |
450.6 |
30.553 |
$2.489 |
14.75 |
"Finished basic shape on 1/12, but still lots of gaps and lumpy sections, especially near the back of the sliding door. Trimmed and glassed edge on 1/24, hope to finish the rear section next week." |
2018-02-08 |
464.1 |
30.606 |
$2.529 |
15.16 |
"Finished passenger side from front door to rear bumper, but still rough and with a giant radius on the aft side of the front wheel arch." |
2018-02-21 |
428 |
29.402 |
$2.439 |
14.56 |
"Finshed cleaning up front passenger door and front bumper." |
2018-03-05 |
451.5 |
30.38 |
$2.409 |
14.86 |
"No changes" |
2018-03-16 |
392.7 |
27.327 |
$2.379 |
14.37 |
"No changes" |
2018-03-26 |
516.6 |
32.854 |
$2.439 |
15.72 |
"Filled in radius aft of front wheel, smooth now like a conventional wheelwell." |
2018-04-05 |
451.5 |
31.613 |
$2.519 |
14.28 |
"Overheated in the middle due to losing lower radiator hose, lots of traffic jams, etc." |
2018-04-22 |
423.9 |
28.276 |
$2.649 |
14.99 |
"No changes. Not much drafting, last week before AC use." |
2018-04-30 |
458.6 |
30.455 |
$2.649 |
15.06 |
"No changes, significant traffic jams, using AC" |
2018-05-17 |
455.9 |
31.844 |
$2.729 |
14.32 |
"No changes, significant traffic jams, using AC" |
2018-05-25 |
471.6 |
31.833 |
$2.819 |
14.81 |
"No changes, significant traffic jams, using AC" |
2018-06-05 |
435.7 |
30.212 |
$2.739 |
14.42 |
"No changes, using AC" |
2018-06-19 |
449.6 |
31.713 |
$2.559 |
14.18 |
"No changes, using AC" |
2018-07-03 |
495.3 |
33.963 |
$2.619 |
14.58 |
"No changes, using AC" |
2018-07-19 |
460.9 |
31.366 |
$2.659 |
14.69 |
"No changes, using AC" |
2018-07-31 |
442.7 |
30.604 |
$2.609 |
14.47 |
"No changes, using AC" |
2018-08-14 |
429.1 |
29.869 |
$2.669 |
14.37 |
"Lots of fast driving, not much drafting. Missing giant ragged chunk aft of front wheel, need to bondo and fiberglass it permanenetly in place." |