[California98Civic]

Below is my list of costs and savings. What do you think? What would your estimates for your car look like? ($$ are rounded to nearest whole dollar)

COSTS AND SAVINGS

Currently, I have a net savings of $391. I don't worry whether each mod pays for itself. I look at them all as interacting mods that assist hypermiling techniques. So I'm happy to break even over all. My 13" VX wheels I count as free because I got them with badly needed and nearly-new Michelin Harmonys. I now do all maintenance and have completed: a tune-up, three oil changes, and rotating the tires once as well as replacing MT fluid, distributor, cap and rotor, sparkplugs, coolant, tires, and muffler.

Savings:
Gasoline $1367
By extending oil change schedule: $30/6K mi. x 3 = 90
Royal Purple instead of Honda MT fluid: $8
By extending muffler life: $2/mo. x 11 (- patch cost) = $22
By extending use of former tires: $100/15K mi. x 1 = 100
-----------------------------
Savings ~ $1587 Feb 2011 - July 2012

Costs of ecomods:
PC1200 deep cycle battery $222
Ultra Gauge 69
VX 3.25 final drive and countershaft 58
Thrush muffler & weld (cost over OEM): 30
Coroplast 30
PVC Plumbing pipe 10
Dryer hose 5
Convex mirrors 13
Lawn edging 10
Freon draining 50
Tape 35
Velcro 5
Zip ties 10
Goo Gone 5
Great Stuff 7
OEM AT selector knob (new) 39
Inline ATO fuseholder 3
16 gauge wire 5
Terminals and splicers 2
Switch for injector kill-switch 8
Switch for alt cut-off 4
Misc hardware 37
Gasoline for testing 35
7 LEDs (brake, run, other) 114
First deep-cycl batt (-Interstate batt price) 28
25 amp battery charger 160
6 amp on-board charger 70
1.5amp on-board maintainer 30
On-board digital volt meter 29
HID headlight adapter kit 70
Subtotal 1173
Costs of comforts and fun
Ecomodder and other stickers 17
Top grade, metalized tint 200
Sheepskin seat covers 116
Dashtex dash cover 30
MP3 aux line equip 49
Accessory charger (iPod & phone) 10
Subtotal 442
Costs of tools:
Actron scan tool 130
MityVac vacuum pump 32
Voltage meter 8
Wrenches 25
Sockets 30
Timing light 30
Tin snips 15
Hacksaw 8
Oil filter wrench 5
Subtotal 283
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Total ecomodding costs = $1193
(with comfort costs added = $1615)
(with tools and comforts costs added = $1898)

$1587 (saving) - $1193 (cost) = +$394
(-$28 if including comfort stuff and -$311 if including both tools and comfort stuff)