Author Topic: Experiment - Fuel Efficiency (Read 67302 times)

BILL*69 · « **Reply #150 on:** Aug 2, 2006, 10:12PM »

hahah thanks for the calculation... kinda. lol thats a shockin figure... ah well, i dont pay for much petrol when i get my provisionals

ffourc · « **Reply #151 on:** Aug 3, 2006, 02:45PM »

Quote

extremely odd rev out to 5000rpm

my point exactly.

On Compass(ABC) they had a traffic study , that found agressive drivers on motorways (ie. more lane changes, accelerating) used FOUR TIMES more petrol than placid drivers.

4X makes you think - but unfortunately when I'm driving Mr Hyde takes the wheel.

Quote

dont assume,

NB my car would easily get under 10L/100k city - with a different driver

I was simply stating if the car is running properly (ie. roadworthy) - driving style has the biggest effect on economy.

SSS · « **Reply #152 on:** Aug 4, 2006, 08:50AM »

Quote from: ffourc on Aug 3, 2006, 02:45PM

my point exactly.

On Compass(ABC) they had a traffic study , that found agressive drivers on motorways (ie. more lane changes, accelerating) used FOUR TIMES more petrol than placid drivers.

4X makes you think - but unfortunately when I'm driving Mr Hyde takes the wheel.
NB my car would easily get under 10L/100k city - with a different driver

I was simply stating if the car is running properly (ie. roadworthy) - driving style has the biggest effect on economy.

Believe it or not, on my daily travels to work, i haven't noticed a change in fuel economy between driving sedate one week and putting my foot down the next week.

bigpud2012 · « **Reply #153 on:** Aug 6, 2006, 09:18PM »

how much difference are we talking SSS

Jono · « **Reply #154 on:** Aug 7, 2006, 12:00AM »

Quote from: SSS on Aug 4, 2006, 08:50AM

i haven't noticed a change in fuel economy

dave-trx · « **Reply #155 on:** Aug 15, 2006, 09:49PM »

Jono the way I read it, it was to SSS

quote how much difference are we talking SSS unquote

Jono · « **Reply #156 on:** Aug 16, 2006, 12:15AM »

So bigpud is supposed to wait for SSS to say he hasn't noticed any difference whatsoever (translation: 0l/100km difference) again?

SSS · « **Reply #157 on:** Aug 16, 2006, 08:38AM »

it seems to be only around 0.5l/100km or thereabouts.

wicked · « **Reply #158 on:** Jun 26, 2007, 09:42AM »

It's been a while since someone posted fuel efficiency, well here I go at the risk of being flamed.

26.3 litres of Shell unleaded going for 343 Km
That converts to 7.67litres/100km. My Bluey personal best

Not bad considering that's based on 2 persons in car with 3 hours of highway driving (bruce highway) and 1 hour of sub urban driving. Not a bad recovery from a hillclimb which I've done a week ago. Actually I'm expecting a much worst fuel economy

NAV4X4 · « **Reply #159 on:** Sep 15, 2007, 12:03PM »

Hi all, my 93 navara 4x4 ka24e, Ive been monitoring for 4 months now and is very connsistant,.

I dont try for economy, and my driving is all around town, lots of stops and starts, and very short trips, I sort of live in a 5 k radius of everything, anyway I use 15 litres of fuel for every 100 ks.

my navara weighs 1600 kg and is a manual, I think most of you guys cars weigh in the vasinity of 1200 kgs ? max.

so I guess its like you guys always carrying 5 adult men.

BILL*69 · « **Reply #160 on:** Nov 7, 2007, 01:09PM »

Sorry to dig here lads, but i have an interesting experiment. As some will know, and some wont, my pinny is on LPG. In this thread we have been calculating how many L/100km. I obviously cant use this effectively, as mine will be way higher. Instead, i thought we could calculate how much it costs each of us to drive that 100km, using the x amount of litres times the current price of your fuel. Mine is as follows...

Use 48 litres every tank.
Get 320km driving very un-sedately.
Therefore, 48/320 = 0.15 x 100 = 15L/100km.

I only buy my gas at 53.9c/L now or lower (price has risen so much in 10 months)...
So, 53.9c/L x 15L = .539 x 15L = 8.085

i.e $8.09 per 100km.

I do not intend to start a debate about power loss on LPG etc, as i know that i have lost power, just thought it would be interesting to compare the costs...

cruizer · « **Reply #161 on:** Nov 7, 2007, 01:19PM »

60 litres gets me 450km.
60/450 = 0.133 x 100 = 13.33L/100Km

Assume price of 132 (98 octane)
132 x 13.33L = 1.32 x 13.33L = $17.56

Fark i need to get a new coolant thingy...

Loop · « **Reply #162 on:** Nov 8, 2007, 09:08AM »

My XR6 Turbo has a trip computer that says 14.1l/100km at present, although that is over several thousand km.

Filled up the other day, 58l got me 480km
58/480 = 0.121 x 100 = 12.08l/100Km

Filled the tank at $1.28 (V-Power)
128 x 12.08 = $15.46 per 100km

JelloBello · « **Reply #163 on:** Nov 15, 2007, 11:11PM »

Wow... just got the best tank I've ever had in the year I've owned the attesa (sr20det)

59L = 511km which is about 11.5L/100km, around 150 of those kms were highway rest was suburban giving it a fair bit of stick every now and again, very impressed

the norm is 370-450km from a tank

cost per 100? lets see.

filled her up at $1.29 (vortex 98) so that's $14.83/100km

SSS · « **Reply #164 on:** Nov 16, 2007, 09:27AM »

Quote from: BILL*69 on Nov 7, 2007, 01:09PM

I do not intend to start a debate about power loss on LPG etc, as i know that i have lost power, just thought it would be interesting to compare the costs...

I'm thinking of putting the daily driver on vapour injection LPG should fuel costs increase a tad too much in the next 6-8 months.
My parents have that system on their R50 Pathfinder and there is no noticeable difference in power between petrol and LPG. It feels a little torquier down low on LPG to be honest.

previously i was on about $16/100km for the last tank of fuel, that should improve with some changes i have made this week.

dave-trx · « **Reply #165 on:** Nov 16, 2007, 02:18PM »

My 2006 STR Navara weighs abit over 2 tonne with all the accesories I have added to it. Winch, steel bullbar, UHF, hardtop ute lid, 32" tyres.

1000km's/102L. Fuel tank holds 125L of diesel. 3L turbo diesel engine.

Jono · « **Reply #166 on:** Nov 16, 2007, 07:20PM »

Heh heh heh...

U11 Bluey + CA20E+T + CA18DET injectors + needs a tune badly.

The last tank was 15.9l/100km.

15.9*1.369 = $21.77/100km

I've got a potentiometer in the AFM signal wire going to the ECU which I use to lean out the mixtures a bit. The CA18DET injectors are much bigger than the factory CA18ET injectors, so much so that it was fouling the plugs with soot before I put the pot in.

Now because there's a lower load signal going into the ECU I assume it's running fairly advanced timing. Because of this I have to richen the mixtures, as I can't adjust the timing easily except by turning the dizzy, and this is sort of going backwards anyway because it'll be less drivable off boost than it already is.

Colby · « **Reply #167 on:** Nov 19, 2007, 12:15PM »

Just drove up to Canberra from Geelong over the weekend. Managed just over 700km on a single tank (642km when light came on), and very similar on the way back. If i ran it dry, think we would have stopped about 10km from home.
7.0l/100km... with petrol up at $1.40, still gets me 100km for under $10

Loves the highway!!!

Highway driving 110 most of the way... bloody thing revs at 3000rpm the whole time, so ennoying with the 3" and cannon.

SSS · « **Reply #168 on:** Jan 7, 2008, 02:19PM »

Best of 9.25L/100km last tank of BP Ultimate.

All freeway driving to/from work now.

Budgie · « **Reply #169 on:** Jan 7, 2008, 02:32PM »

You suck adam

SSS · « **Reply #170 on:** Jan 8, 2008, 08:39AM »

It should do better than that budge.

noss · « **Reply #171 on:** Jan 8, 2008, 12:09PM »

yeh i was getting in the low 8's on the freeway depending on fuel

SSS · « **Reply #172 on:** Jan 8, 2008, 09:51PM »

8.6l/100km on BP ultimate.

185km's to 16L.

SleepaTi · « **Reply #173 on:** Jan 13, 2008, 08:32PM »

R31 Skyline Ti 3L auto turbo

highway 12-13L/100km caltex premuim

--- from werribee to greensborough & back = 120km = 1/3 of a tank taking it easy
city 15-16L/100km caltex premium

can't wait to p1ss it off & get my U12 Ti on the road

SSS · « **Reply #174 on:** Jan 14, 2008, 07:01AM »

Last tank, 8.9L/100km, 591kms to 53L.

ffourc · « **Reply #175 on:** Jan 15, 2008, 12:48AM »

If I get 10l/100 city driving, I'm happy; ca20e but then again I suspect(know) I'm a more agressive driver than most

SSS · « **Reply #176 on:** Jan 29, 2008, 06:35AM »

8.8 L/100km, 553km on trip meter when i put in 48.57L. (so calculated 8.78L/100km)
This tank and last are just BP 91 ULP.

Need to do a little more work on my fuel maps in closed loop cruise conditions to try and get sub 8.5.

Budgie · « **Reply #177 on:** Jan 29, 2008, 06:32PM »

I will have a result for you soon adam, i've started work in Melton... see what stocko' fuel economy is like with a good nick KA24E. 330km to approx 1/2 so far, but we all know U12 fuel gauges are dicky

Budgie · « **Reply #178 on:** Feb 2, 2008, 02:12AM »

8.3litres to 100km

490km - 41litres

Thats almost 90% highway, some hilly sections to Bacchus Marsh (wollpack rd) then up the cutting to Melton West. Including the shit through Geelong in peak times as well...

I'm pretty happy with that, the car goes well on the highway!

f8tal02118 · « **Reply #179 on:** Feb 3, 2008, 12:30AM »

if not already done
Vehicle: 1991 holden Calais v6 ( yes i do own a Nissan but just no rego on it)
KMs:

Last service: don't know only 4 weeks ago
Extra weight: Sub woofer/amp/ cap 3 people
Mods: ported polished cheap n nasty $30 pod filter e.p performance exhaust
Fuel: bp 98% unleaded
Driving type: 50% highway, 50% city
Driving style: moderate, sometimes hoon aka fast take offs day to day driving
Tyre pressure: 38 PSI
Aircon/window usage: Not that much only hot days
Cruise control: only used on long trips
i found the bp 98 unleaded lasts twice as long as normal unleaded and 91 unleaded also cleans the fuel pump fuel injectors and also noticed a slight increase of power. might be a bit dear but worth it as it lasts twice as long