Mayor555:
Do you still buy fuel in same place sir, as when your exhaust was intact?

Bosun13:
....i didn't change the filling station

Bosun13:
It was started with my Toyota sienna, I do complain about my sienna year 2000 that fuel economy was very bad but to my surprise after making enough enquiry how normal sienna suppose to run, I realized my car is Ok after spending enough to satisfied both kazeems and real engineers....change catalyst,plugs and so many after enough diagnoses ...but just of recent my exhaust pipe burst after 02 censors, i couldn't bear the louder sound but i decided to use it like that for several weeks. To my surprise with that louder sound, where i use to go with #2000 fuel...I'm now using #1000 fuel..pls i dnt really Understand the reason bcs i do hear of busting exhaust leak consume much fuel...i need guru explanation thanks

nurey:


If you are using the fuel gauge indicator as your fuel economy calculator OYO is your case. Buy full tank, if your engine in the sienna is 1mz and is in top shape then

full tank down to the end of the first quarter mark is 150kms

quarter mark to exactly half point is 180 to 200km meaning full tank to half tank should be 350km, the more you deviate then the more you should be worried about my stats is for combined 20% traffic (1.5hrs) 80% highway (3-4hrs)

good luck.

jodeci:
I think the logic is the faster the spent gas exits the better the fuel economy. When your exhaust is broken,the spent gas wouldn't have to travel all the way through the port to exit.

Bosun13:
It was started with my Toyota sienna, I do complain about my sienna year 2000 that fuel economy was very bad but to my surprise after making enough enquiry how normal sienna suppose to run, I realized my car is Ok after spending enough to satisfied both kazeems and real engineers....change catalyst,plugs and so many after enough diagnoses ...but just of recent my exhaust pipe burst after 02 censors, i couldn't bear the louder sound but i decided to use it like that for several weeks. To my surprise with that louder sound, where i use to go with #2000 fuel...I'm now using #1000 fuel..pls i dnt really Understand the reason bcs i do hear of busting exhaust leak consume much fuel...i need guru explanation thanks

ZIMDRILL:


yes a leaking exhaust that has o2 sensor can lead the car to consume for fuel

the reason being air from
outside gets sucked in into the exhaust therefore it affect the reading if the o2 sensor, the o2 sends that false reading to ECU,based on that false reading the ECU adjust the fuel air ratio by adding more fuel becoz the reading from the o2 is indicating more air in the exhaust fumes, therefore ECU add more fuel to balance the ratio

so the ECU is constantly adding fuel due to hole in the exhaust system bring more more air that results in false reading via o2 sensor

nurey:


If you are using the fuel gauge indicator as your fuel economy calculator OYO is your case. Buy full tank, if your engine in the sienna is 1mz and is in top shape then

full tank down to the end of the first quarter mark is 150kms

quarter mark to exactly half point is 180 to 200km meaning full tank to half tank should be 350km, the more you deviate then the more you should be worried about my stats is for combined 20% traffic (1.5hrs) 80% highway (3-4hrs)

good luck.

ojeysky:


It's still strange that 1mz in sienna does this good milage. My Highlander does 260miles on full tank (150m on half tank). Though I understand Highlander is heavier than Sienna yet I think the difference is quite significant. Could there be something wrong? Ofcourse I have no intention of bursting my silencer pipe

EngRichie:
Your observation could be correct. If your intake and exhaust were previously out of tune, the new leak might just have contributed positively to the tune especially if you have a restrictive catalytic converter in there.
There are a lot that I could explain here but time would not permit me. .... Note

Regards.

nurey:


My sienna is always in too shape.

I live on the island and work on the mainland (Ogudu) I am always zooming to work no traffic

I also go to Ogun state regularly I leave early and only get caught up in traffic less than an hour

I maintain 90km/h only exceed that when I intend to over take.

I don't pack load and my suspension is stock.

5W40 all the time and platinum twin tip spark plugs buy fuel from only MRS, NNPC and TOTAL.

The Highlander comes in 3 configuration s

2.4L i4 should have a better fuel economy than the sienna

3.0L V6 FWD should be identical to the sienna

3.0L V6 4WD should be just a stone throw from the sienna.

Then also note that I do more of highway driving in my movement when your journey is follow follow traffic in lagos, please stop calculating fuel economy cause you can run mad.

but your 260miles on full tank is alarmingly bad haba my Navigator V8 would do 320miles in city driving only with traffic.

diportivo:
ol boy

I read

I laff

I tire

thebigkendo:
Some people are just mixing up km & miles anyhow..
Some other people will now go & be repairing wetin no spoil, dey find wetin no lost..

Navigator that has approx 100litres tank is been compared against highlander with 70litres tank..

Make una continue sha..
Diportivo I need another plate of peppersoup

ojeysky:


This is an unnecessary sarcasm. Unless nurey mixed up the km/m but I think he used them correctly. I am more about the sienna which runs same engine with my HL which is doing 150miles at half tank compared to his sienna that is doing 217miles. Secondly my current utilisation is about 70 miles off the city specs in the manual.

Some other people will now go & be repairing wetin no spoil, dey find wetin no lost..

thebigkendo:


Keep on dashing mechanic money for mpg from the manual, I hope you get it one day

Let me quote my self

thebigkendo:
As a clown that I am, I will just leave this here so I don't "misread" any other thing

Sienna is speaking Canadian while the highlander is speaking American

www.nairaland.com/attachments/10022092_screenshot20190812214825chrome_jpeg55c7ef8b8329e78b2349c220a18c7db5

ojeysky:


The stuff you underlined still doesn't indicate where I got it wrong. Maybe this will help:

Sienna 350km= 217miles on half tank
Highlander 241km = 150miles on half tank

Sienna full tank figures. Not provided by Nurey
Highlander full tank figures 418km = 260miles.

Hopefully you will realize you misread something or better still clarify where I mis-spoke and will be quick to apologize

nurey:
The Highlander has approximately 75L while sienna has 79L

for the 1mz we have
2wd V6 17mpg city and 21mpg highway

4wd V6 16mpg city and 21mpg highway

both have a combined of 18mpg as fuel economy.

let's convert 18mpg to L/100km = 16L/100km

so your vehicle is doing 16L per 100km now to mathematics

75L(tank capacity) / 16L X 100km = 468.75km let's say 450k. when your needle would be on red E mark. so half tank should be around 220km.

What's the reason for the difference in mpg between the Highlander and the sienna?
I will be back to trash this one out.

cc Ojeysky

ojeysky:


The stuff you underlined still doesn't indicate where I got it wrong. Maybe this will help:

Sienna 350km= 217miles on half tank
Highlander 241km = 150miles on half tank

Sienna full tank figures. Not provided by Nurey
Highlander full tank figures 418km = 260miles.

Hopefully you will realize you misread something or better still clarify where I mis-spoke and will be quick to apologize