big trouble with FC

[rocket]

Road Condition plays important role in FC.

Last time, full tank at JB, all the way to Terengganu via eastcost route 3, speed around 100 km/h, with few stops, when I reached there, 700km+,  still not light up, it works out FC >19km/L.

But back to Singapore, FC always 11-12km/L....

[hwlee]

hmm.. last sunday.. I drive from JB --> Vivocity --> JB... maintain within 1500rpm - 2000rpm... speed within 80-100km/h... I break my own record. I hit 16.73km/l with RON97...

[Midnight]

Will the FC goes down when it is due for servicing?
My past experience with Nissan Sunny was like, when freshly serviced, the FC is quite good. Or rather OK.
Then after crossing 5k-6k mark, the FC will be getting worse. Up to about 9+km/l when near 10k.
Is this problem only for Sunny? or is it the Fastflo engine oil?
Does Latio behave this way as well?

IMO all cars FC will deterioriate as it is approaching the servicing due date. It is just a matter on how much.
Fastflo engine oil will affect FC also has it is using a thicker oil compared to you using your own preferred oil.

From my experience with Latio so far, your right foot and tire pressure has a larger impact on FC.

My 2 cents!

[pchmj]

Will the FC goes down when it is due for servicing?
My past experience with Nissan Sunny was like, when freshly serviced, the FC is quite good. Or rather OK.
Then after crossing 5k-6k mark, the FC will be getting worse. Up to about 9+km/l when near 10k.
Is this problem only for Sunny? or is it the Fastflo engine oil?
Does Latio behave this way as well?

I change from Sunny to Latio. Drive Sunny for 3 years, FC gets worse as car age, whether just service or not. In NSHW not that bad, but SG roads, really can kpkb about petrol. Now bought a 2yr old latio, FC at least 11.8 km/l. Both cars use engine oil from TC. Does not notice a drop in FC when servicing date nears.

[expresso]

i can reach 270km to 290km for half tank.
it is better to use the calculations as follows:

mileage (kms) / no. of litres of petrol filled up

[Mr_chr|s]

HI guys!!    

New latio kid reporting in.. Hope to get more guidance from all of u guys.

i'm driving a Nissan Latio Sport 1.5A, extronic CVT. Below are my car and driving states:

1. Foot pressure quite heavy; most of the time move off straight go to 2k RPM and above.
2. My wheel pressure for front is 34psi, and for rear is 31psi.
3. 65% highway, 35% city.
4. half tank mark, distance clock only 230km, full tank most of the time 440 to 450km hit reserve.
5. Air con always turn only to 25 or 24 degree.
6. Rim size, stock: 15inch.
7. Fuel used esso 95. (Tried shell fuel saver on 95 too. additional distance clock 20-40 km)
8. FC base on calculation is around 12.5km/l, this is base on fuel topup and distance clock. i monitor it for 2 months.
9. Lastly i'm still using half synthetic engine oil, going for my 5000km servicing next week to change it to fully synthetic engine oil. hope it will improve my FC too.  

With regards of this topic. i juz have a few cent worth of advise although my driving experience is only going 3 months old. hope this will help all of us.

1. FC heavily depend on ur foot pressure to ur accelerator. (top priority)
2. Wheel pressure. (recommend to check and pump pressure everytime u go for refuelling)
3. Air-con temperature plays a part on the fuel consumption. But the Fan wont. (read from some articles, correct me if i'm wrong)
4. types of road travel.
5. Rim sizes.
6. there is few more items that play apart too. ( like air filter, whether engine due servicing)

I have gone thru an article that for CVT engine for latio, is good to maintain your rpm to 2.5k or more while constant driving. this is where you can see ur car starts to perform wonder fuel consumption. Can anyone advise me on this? is this truth?

Hope this help too.. my 1 cent advise nia.  

live a life to the fullest..[/size][/size]
[/size]

[Huatster888]

nice elaboration bro......mine weekend car....whole weeks 7days i tink i use the car 3 times nia.......always hit 230km at half tank mark.....i wunder if its good enuff anot ........most of the time light footed.always remember

STEP MORE DRINK MORE, STEP LESS DRINK LESS...........

[Ying]

How long does it take for you and your kaki to finish one Jug of beer?

How long does it take for you and your car to finish one tank of petrol?

if your FC is 13km/l, say you use 40L and travell 520km in total. The number make you feel good but deep down you did not enjoy it as much. So you don't care, just drive as you wish and hit 10km/l. To cover the same 520km distance, you have to pay extra $21 for petrol(say $1.75/l). That's just one jug of beer, but this jug can last for days if not weeks for your car.

you only live once, if you want to drink then just yammm sennng haha

ah hemm..... drink but dont drive

[nakshire]

I think Ying's rationale for fuel consumption is that you control the car and not the other way round.

Acceleration, rpm, etc... they are all controlled by you. Whether you want the car to really move fast and perform up to your standard is up to you as to whether you press in hard or not.

But if you are letting the fuel consumption take over your driving style, and then making life very difficult for you (e.g. slow pickup, letting tons of cars overtake u because you are slow), then you should really consider whether driving is suitable for you or not.

it is good that we monitor the FC of our car so that we know whether our car is cranking up or not. But if we overdo it and let the car determine our driving style, we will be suffering rather than enjoying the ride.

For me, i tried the fuel saving method for a tank and hit about 14.8km/l, 60%hw40%city. but not shiok!
 - car no air con, hot
 - cars overtake me (sian)
 - cars high beam at me because i'm slow
 - 80km/h at expressway. (3rd lane too fast, 2nd lane too slow)

Then I shifted my style back to heavy foot. FC drops to 12.4km/l

assuming full tank, total savings for fuel saving is $31.88.

 - car with air con at 23 degrees (cooler ride)
 - i overtake lots of cars who is jamming up the road now
 - i dun high beam people. so i tail lor!
 - Fast rides on expressways. sometimes go up to 120km/h. (some other lations here drive even faster than me)

with all that in exchange for a full tank, i will rather do it. $31.80 for 1.5weeks of good ride. Its worth every single penny. :)

[Ying]

Bro Nakshire, you are so right. I can't say it better than you do.

My whole tank usual FC is at best 10km/l across 3 weeks. Most of your FC is better than mine, I should be the one who worry the most.  If I drive 80km/l on NSHW I am confident the same car can hit 15~16km/l. So getting good FC figure is not a problem but at what cost?

the marginal gain in Petrol cost is way too small compare to COE cost and car value lost. Owning a car should be happy things, don't let the small things ruin your mood.

Leave things as it is so long as no serious drop in FC for the same driving pattern. Unless fine tuning the car to gain better FC make you happier than driving the car. Do what ever make you happier : FIX IT or LEAVE IT. Cheers and have a nice weekend

[hwlee]

hmm.. i found.. if i want to archive above 14km/l... I just need to maintain 1 things.

1st is the RPM. You can heavy foot abit (but not OVER 3000RPM) at initial stage but after your car speed >60km/h, you should maintain it between 1500RPM and 2000RPM

With 2000RPM on road, our latio will hit around 100km/h liao (qualified to get Traffic ticket in Singapore).. 

I don't mind to be turtle on road (I hope to be slow & safe driver). Many lation drive more faster than me (especially that pretty lady who speak loud)


My driving pattern..
1. I think mostly I drive at Highway but sometime stuck inside heavy traffic jam.   
2. I use stock 15 rim and I don't remember when my last time go and check my car's tyre pressure.
3. I prefer to use RON97 petrol and 100% sync engine oil.
4. I set Aircon temperature fix at 26 (day/night) with Auto Mode.

My own record
1. FC:
  Worst:   11++km/l
  Best:     16.73km/l (that's last sunday)
  Happen: >350km with half-tank when trip north

[nakshire]

hmm.. i found.. if i want to archive above 14km/l... I just need to maintain 1 things.

1st is the RPM. You can heavy foot abit (but not OVER 3000RPM) at initial stage but after your car speed >60km/h, you should maintain it between 1500RPM and 2000RPM

With 2000RPM on road, our latio will hit around 100km/h liao (qualified to get Traffic ticket in Singapore).. 

I don't mind to be turtle on road (I hope to be slow & safe driver). Many lation drive more faster than me (especially that pretty lady who speak loud)


My driving pattern..
1. I think mostly I drive at Highway but sometime stuck inside heavy traffic jam.   
2. I use stock 15 rim and I don't remember when my last time go and check my car's tyre pressure.
3. I prefer to use RON97 petrol and 100% sync engine oil.
4. I set Aircon temperature fix at 26 (day/night) with Auto Mode.

My own record
1. FC:
  Worst:   11++km/l
  Best:     16.73km/l (that's last sunday)
  Happen: >350km with half-tank when trip north

26degree... thats room temperature!! Not hot meh?

[Mr_chr|s]

I think Ying's rationale for fuel consumption is that you control the car and not the other way round.

Acceleration, rpm, etc... they are all controlled by you. Whether you want the car to really move fast and perform up to your standard is up to you as to whether you press in hard or not.

But if you are letting the fuel consumption take over your driving style, and then making life very difficult for you (e.g. slow pickup, letting tons of cars overtake u because you are slow), then you should really consider whether driving is suitable for you or not.

it is good that we monitor the FC of our car so that we know whether our car is cranking up or not. But if we overdo it and let the car determine our driving style, we will be suffering rather than enjoying the ride.

For me, i tried the fuel saving method for a tank and hit about 14.8km/l, 60%hw40%city. but not shiok!
 - car no air con, hot
 - cars overtake me (sian)
 - cars high beam at me because i'm slow
 - 80km/h at expressway. (3rd lane too fast, 2nd lane too slow)

Then I shifted my style back to heavy foot. FC drops to 12.4km/l

assuming full tank, total savings for fuel saving is $31.88.

 - car with air con at 23 degrees (cooler ride)
 - i overtake lots of cars who is jamming up the road now
 - i dun high beam people. so i tail lor!
 - Fast rides on expressways. sometimes go up to 120km/h. (some other lations here drive even faster than me)

with all that in exchange for a full tank, i will rather do it. $31.80 for 1.5weeks of good ride. Its worth every single penny. :)

Fully agree to what ying & nakshire  mention.

Dun let the FC control u over too much. monitoring of FC is juz to allow u to monitor your car performance on fuel. unless u encounter a drastic drop like noone else then mayb u can highlight to your SE or dun to special situation.

if not no matter ur FC range from 10km/l to 14km/l u still will be driving this car of yours. So juz enjoy ur car ride lor.

my driving patter on highway most of the time at lane 1. if can always maintain 110km/h or 120km/l
guess i'm quite a heavy footer most of the time.
And i on my aircon auto to 25 degree (day/night)
but still maintain my FC quite constant at 12.5km/l

but like what Hwlee said maintain it between 1.5k rpm and 2k rpm. is that truth?

i read thru an article it said initial move off already then the FC improve by maintain 2.5k RPM. anyone to highlighten me this point.

[hwlee]

26degree... thats room temperature!! Not hot meh?

26 degree is just nice weather for me. Last night I turn to 27 degree as TOO cold. 
I will turn to 24 degree only if behind got passenger.

In fact, I totally agree what ying & nakshire mention on FC issue. what Mr_chr|s saids also true. We records down the FC is to monitor the car performance.

No matter your FC is 11km/l or >16km/l, it still your car at this moment.

It like issue of currency exchange rate. This stall give you a rate SGD1=RM2.41..that stall give you a rate SGD1=RM2.42... if you just going to exchange for SGD100, the different is really "small". But if you going to exchange for SGD100,000...you also just got SGD1,000 different mah (which someone will think it is "small" as well).


p/s: to Mr_chr|s, most of the cars in market will have best FC if we drive in range of 80km/h-90km/h consistently (you can go and check those car advertisement which mention about their BEST fc). Different car got different range of RPM while it reach 80km/h-90km/h. As I know, mostly old car (i mean Engine design) take around 2500RPM to reach 80-90km/h and mostly new car with new engine (especially VTEC, VVT-i, MiVec..etc) take below 2000RPM to reach 80-90km/h. That's why mostly new car can save more petrol instead of old car.
In fact, RPM can not be a reference to FC. It is matter of how fast you can drive "consistently". that's why driving at HW got better FC than driving in City (but if HW is jam, both FC should be similar)

I remember last time when I drive my old car, i got monitor my FC with the speed different. My ex-car take 2500RPM to reach 80-90km/h. If i don't consistently maintain around 2500rpm, I will lost extra 100km with full tank while driving at KL area (which everywhere is SUPER jam).

[Mr_chr|s]

thks bro for clearing my doubts.

cheers

[hwlee]

Yesterday i run 132.60km...pump 8.111L of petrol...that's 16.35km/l for this week. 

[nakshire]

Yesterday i run 132.60km...pump 8.111L of petrol...that's 16.35km/l for this week. 

cuz yesterday you pump first knob then stop.

today pump first knob, then pump again, pump again, then shake the car, then pump again.

that makes it 16.35

[hwlee]

cuz yesterday you pump first knob then stop.

today pump first knob, then pump again, pump again, then shake the car, then pump again.

that makes it 16.35

that's sound too technical for me...my math not such good leh, bro.
I normally pump petrol till I saw it "almost" flood out from the fuel hole, where I dun think possible to fill more, then i stop..all day same 

I scared shake my car for just extra 1L of petrol..will spoiled my suspension nia...

[nakshire]

ya...

really wonder why some drivers hump on their cars in msia.

[hwlee]

cos their suspension is good brand mah... you sit inside, not even feel shaking one...