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Fuel log graph
Efficiency log for: Harold - 1994 Honda Civic CX
  • Lifetime Fuel Economy: 52.06
  • 90-day Fuel Economy: 54.51
  • 3-tank Fuel Economy: 49.88
  • EPA Rating (% over): 36 (51.4167%)
  • Total fills: 43
  • Average cost per gallon: $4.19
  • Average cost per fill: $29.41
  • Average cost per mile: $0.08Total gallons used: 336.79
  • Total miles traveled: 17534
  • Total cost: $1411.14
  • Total saved: 150.27 gallons
  • Total saved: $629.63
  • Average tank distance: 407.77
Fill date Distance Fill amount Price MPG Details
2008-09-12 471 mi. 8.919 US gal $3.499 52.81 US E10 gasoline.

First tank with boattail.
2008-09-02 451.9 mi. 9.547 US gal $3.479 47.33 US E10 gasoline.
2008-08-01 401.3 mi. 8.08 US gal $3.699 49.67 US First tank with 87 octane "E10" gasoline.

Gasoline = 90% gas, 10% ethanol.
2008-07-20 416.4 mi. 6.861 US gal $3.799 60.69 US Rockport, MO.

Fully loaded, belted alternator.
2008-07-19 499.8 mi. 7.824 US gal $4.089 63.88 US Sidney, NE.

Fully loaded, belted alternator, 65-70mph.
2008-07-18 388.9 mi. 6.629 US gal $4.159 58.67 US Battle Mount, NV.

Fully loaded, belted alternator.
2008-07-18 345.4 mi. 6.179 US gal $4.239 55.9 US Coalville, UT.

Fully loaded, mountains, belted alternator.
2008-07-17 270.6 mi. 5.737 US gal $4.599 47.17 US Shingletown, CA.

Fully loaded, mountains, belted alternator.
2008-07-11 125.5 mi. 1.883 US gal $4.779 66.65 US 100% unbelted.
Short fill to calibrate MPGuino.
2008-07-10 369 mi. 7.148 US gal $4.599 51.62 US 50% unbelted.

Roadtrip back from Yosemite. Loaded with 2 people and camping gear.
2008-07-09 285.7 mi. 6.978 US gal $5.059 40.94 US 100% belted.
EXTREMELY steep grades going into Yosemite on Hwy 120. Again, loaded with 2 people and camping gear.
2008-07-06 477.9 mi. 8.415 US gal $4.599 56.79 US 100% unbelted.
Roadtrip to Yosemite, car fully loaded with 2 people and camping gear.
2008-06-21 514.4 mi. 7.066 US gal $4.799 72.8 US 100% unbelted. 1/2 tank of normal commuting, 1/2 tank of 55mph highway trip to Santa Rosa.

Paying much closer attention to driving technique...
2008-06-17 478.2 mi. 9.566 US gal 49.99 US 100% unbelted
Hauling four people around mountainous terrain. Not bad for probably exceeding the GVWR...
2008-05-30 435.8 mi. 8.052 US gal 54.12 US 70% unbelted.

Mostly city, lots of short trips on a cold engine.

Water pump leaking...
2008-05-17 443.2 mi. 7.24 US gal 61.22 US 75% unbelted.
Commuting.
2008-05-08 478.2 mi. 8.438 US gal 56.67 US 1/2 tank: 65mph freeway driving up mountian passes.

1/2 tank: Beltless commuting.
2008-05-04 353.7 mi. 7.29 US gal 48.52 US The wife driving normally on the interstate 70-75mph.
Alternator running with belt.
2008-05-03 91 mi. 1.327 US gal 68.58 US Lacey MPG Rally course
2008-05-02 411.4 mi. 6.004 US gal 68.52 US First full tank with mostly beltless alternator, rear wheel spoilers, completed sideskirts, flush solar kammback.

Holy cow.
2008-04-24 430.2 mi. 8.738 US gal 49.23 US First tank with alternator kill switch. Alternator turned off about 80% of the time.
Beltless alternator last 50 miles.
2008-04-16 445.4 mi. 8.121 US gal 54.85 US Got lost going to get my batteries, slow small rutted dirt roads , bad FE.
2008-04-08 499.3 mi. 8.718 US gal 57.27 US First tank with partial front and rear bellypan, trimmed airdam, HAI.
2008-03-28 449.6 mi. 9.032 US gal 49.78 US WTF?

WAI for last 50 miles.
2008-03-19 446.9 mi. 8.245 US gal 54.2 US Oil & Filter change. 5w-20 dino juice.
2008-03-09 479.5 mi. 8.671 US gal 55.3 US Woot. Best tank to date.
2008-03-02 438.9 mi. 8.23 US gal 53.33 US Driving back from SanFran for half the tank. 65mph instead of my usual 55mph.
2008-02-19 189.6 mi. 3.479 US gal 54.5 US short tank before the trip to SanFran.
2008-02-16 520.2 mi. 9.526 US gal 54.61 US Kammback FTW!
2008-02-04 512.3 mi. 9.973 US gal 51.37 US Disc wheelcovers, no Kammback.

Retroactively applied correction factor of +0.025% to my odometer readings to compensate for the non OEM sized tires.
(175/70r13 vs. 165/70r13)
2008-01-29 494.8 mi. 9.155 US gal 54.05 US Shoulda' been a crappy tank, with all that coastdown testing at 80mph. I filled up at Chevron instead of Shell (my usual) last time so maybe Chevron doesn't sell E10 yet...
2008-01-20 477.2 mi. 9.48 US gal 50.34 US First tank w/ mirror delete
2008-01-01 455.8 mi. 8.597 US gal 53.02 US First tank with airdam? I can't remember, but I think so, also had the mirror delete going for the last 100 miles or so, not enough to make a difference I suppose.
2007-12-16 450.3 mi. 9.403 US gal 47.89 US clusterfu@# of holiday traffic.
2007-12-06 429.3 mi. 9.294 US gal 46.19 US Heavy winds (gusting up to 75mph) constant rain and holiday traffic makes for some bad FE.
2007-11-25 457.6 mi. 8.312 US gal 55.05 US Rear wheel fairings installed.
Think I finally found a technique that my car agrees with:
50-55mph Steady state DWL on the highway.
<45mph P&G w/EOC in town.
2007-11-18 396.3 mi. 8.974 US gal 44.16 US Higher speed P&G (57mph median speed)
2007-11-09 402.9 mi. 8.226 US gal 48.98 US New O2 sensor, 195 degree thermostat, P&G on highway (50mph median speed)
2007-10-31 394.6 mi. 8.623 US gal 45.76 US Temporary grill block, some experimenting with EOC
2007-10-24 370.7 mi. 9.006 US gal 41.16 US Keeping lowest possible RPM's without engine bucking. ~55mph on highway.
2007-10-15 370.5 mi. 8.278 US gal 44.76 US New rear tires at 45 psi.
2007-10-10 370 mi. 9.067 US gal 40.81 US Baseline establishment in progress.
2007-10-02 342.8 mi. 8.456 US gal 40.54 US First tank since I bought it.
New Headgasket, coolant change, oil change, new brake rotors pads and fluid.

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