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LPG OR CNG

Pages : 12345
#31 14-Jun, 2007 09:31 AM
saurabh mehta
New Arrival
Joined Date: 09 Oct 2006
Location: New Delhi
Posts: 15
Likes: 0

Hi Saurabh,

That one was my post for you which i posted earlier; which Siddharth couldn't quote properly. Previously also, I wanted to ask you one question, How come your car is running @ Rs2.75/km, it comes out to be 16kpl and that too in city???? Rs. 2.75/km is equal to a diesel car's running cost...

[^^/quote^^]

Hi Anurag,

Its true...a lot depends on your driving style, how well u maintain your car to get an optimum performance out of it. I may not install CNG kit as it will require maintenance at regular intervals because they r not as expert and professional as wat it required to be.(compare with factory fitted kit). I just donot want to waste my time with the mechanic in the workshop, will always prefer company fitted with warranty. Some of my friends have installed kit from outside n they r facing complications related to post fitment.



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#32 18-Jun, 2007 02:56 PM
Sunil Shenoy
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Joined Date: 18 Jun 2007
Location: Mumbai
Posts: 2
Likes: 0

Practically Speaking how much is the km/ltr difference in mileage for city and highway driving?? Take for example the Wagon-R DUO when used on petrol and on LPG.

Has Anyone ever faced deterioration of engine firing and noise when LPG is used over a period of time. Say for about a year or more.



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#33 11-Jul, 2007 12:20 AM
Karan
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Joined Date: 25 Jan 2007
Location: Noida
Posts: 6815
Likes: 333
well... its really nice to c how dis forum is full of queries,suggestions,and more and more exciting questions abt CNG and LPG... whichever way we go in this LPG Vs CNG battle...Planet Earth will be the Winner,since these are both clean fuels....(atleast at d time of burning,which is MUCH better than Petrol and Diesel). Well,apart from the Eco-friendly talk. YEs, i agree with Anurag...HOnda City is a gr8 option with CNG. And when one thinks of Selecting CNG over LPG,make sure u calculae exactly,how much u save.... because if you choose CNG,u'll surely want to recover the extra 25,000 odd,that u hav spent for CNG in place of LPG.

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#34 11-Jul, 2007 12:32 AM
Karan
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Joined Date: 25 Jan 2007
Location: Noida
Posts: 6815
Likes: 333
hi Sunil,well....Km/ltr mileage for City n Highway is sumthin which can be different at different times..... eg...for a normal office goer,the difference wud be more...since traffic during office hrs is pretty heavy,which cud reduce the mileage by 2-3 kms. and on the other hand...the mileage for a guy doing a grave-yard shift in a BPO can b close to the highway average !Since there is very little/no trafic so late at night. Well... taking the eg of d Wagon R duo.... LPG is sed to give a slightly lesser average than Petrol,but thanx to the different Torque and power set up by none other than the MAruti Engineers ( in short,the company fitted benefit!!)..d difference in Petrol and LPG average isnt much. well...my Wagon R Duo has burnt 4,000 til now. Driven mostly on LPG ofcourse.Der's no noise..infact with LPg it becomes smoother.

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#35 11-Jul, 2007 12:40 AM
Karan
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Joined Date: 25 Jan 2007
Location: Noida
Posts: 6815
Likes: 333
YES....abt Engine firing... i did get the feeling that the Car is mis-firing on LPG.... n i started to feel more vibrations on the gear... i took it to the Company owned service station,and they cleaned up the GAS-Air Filter.... This is the ONLY part in all cars using LPG/CNG which needs to b cleaned more often than the regular servicing. n 2ndly...dey told me to keep the Petrol Level as low as possible... ders no point of keeping more petrol in d car neway,since nobody uses petrol wen one has LPG/CNG as a fuel.

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#36 29-Oct, 2007 11:55 PM
Vidhur
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Joined Date: 29 Sep 2007
Location: Mumbai
Posts: 661
Likes: 28
Posted by anurag

the running cost of a car on CNG will be half of that of LPG.

in mumbai ............ th running cost of cng has always been closer to two/third ........... not half



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#37 08-Nov, 2007 12:53 PM
Ved Prakash
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Joined Date: 08 Nov 2007
Location: New Delhi
Posts: 4
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I will suggest you to go for CNG because its safer than LPG and moreover you can endorse it in your RC.

Also you can find lot of CNG filling stations in Delhi and they are growing rapidly in metros.

 

CNG or LPG both cost your engine by 10 to 15 percent i.e. reduce the life of your engine by 10-15% but given the fact the low cost of running the car it is better to go for CNG or LPG. You can save 50% on your costs including the cost of reducing the life of engine.

 

So go for CNG in my opinion.



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#38 09-Nov, 2007 01:33 AM
Vidhur
Best-seller
Joined Date: 29 Sep 2007
Location: Mumbai
Posts: 661
Likes: 28

Posted by Banwari Lal Sharma

Well, both LPG and CNG are great as far as combustion is concerned. They  burn completely and don't leave anything unburnt inside engine. This leads to lower maintenance and better engine life. There are some rumours around that CNG leads to corrosion in the engine cylinders but I absolutely find no reason for the same.
As far as I'm concerned, I find both of these fuels better than Petrol from maintenance and engine life point of view.

it is true that lpg results in lowered maintainance costs and incresed engine life for reasons specified by banwari ..... but

1 imp point relevent to th issue has been overlooked completely

cng causes overheating ... while lpg cools th engine ... in comparison to petrol

it is this repeated overheating of th engine ....... hundreds and thosands of times ... which primarily results in increasing maintainance costs and considerably reducing engine life of a cng engine in comparison to petrol

so petrol is better than cng ... on both maintainance exp & engine life

it is in appreciation of these negative aspects of cng that used cng cars usually fetch a considerably lower price ... while good used lpg cars fetch an additional 8-0 k over its petrol value



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#39 01-Dec, 2007 02:51 PM
Karan
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Joined Date: 25 Jan 2007
Location: Noida
Posts: 6815
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Posted by Vidhur
Posted by anurag

the running cost of a car on CNG will be half of that of LPG.

in mumbai ............ th running cost of cng has always been closer to two/third ........... not half

 

ya..dat mite b true 4 Mumbai...bt 4 Delhi...the running cost o cng wud actually b half of lpg.....because of difference in rates also.



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#40 11-Dec, 2007 10:59 PM
Vidhur
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Joined Date: 29 Sep 2007
Location: Mumbai
Posts: 661
Likes: 28
Posted by Ved Prakash

I will suggest you to go for CNG because its safer than LPG and moreover you can endorse it in your RC.

Also you can find lot of CNG filling stations in Delhi and they are growing rapidly in metros.

CNG or LPG both cost your engine by 10 to 15 percent i.e. reduce the life of your engine by 10-15% but given the fact the low cost of running the car it is better to go for CNG or LPG. You can save 50% on your costs including the cost of reducing the life of engine.

1. lpg is far safer than cng .... on th issue of pressure alone ...... lpg has a pressure of only 7kgs ... against a whopping 220 kgs of cng

2. far more car models can b endorsed on lpg than on cng

3. it is true that cng reduces engine life ... it is also true that domestic lpg reduced engine life ... but wot is available now for cars is autolpg .. which is beneficial to th engine .... and increases engine life by abt 15 %



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#41 16-Jul, 2008 08:08 AM
Paz Mony
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Joined Date: 16 Jul 2008
Posts: 1
Likes: 0

Sorry to spoil the celebtation but ther are things that they don't tell you about how good are gas fuels for the engine. Gas fuel, lacks the lubricity that exist in gasoline and diesel. The lubricity is crucial for the upper head components -piston crown, cylinder bore rings and valves. the rsult is higher friction , greater wear to engine parts, higher temperature (the spray of liquid fuel mixture with air cool down the combustion chamber). Bottom line-shorter life span of engine, blow-by of combustion gases to oil sump, worse performance. But why should they tell you all this when all they want is to ease up the pressure from importing oil.



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#42 16-Sep, 2008 04:59 AM
Brucely
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Joined Date: 16 Sep 2008
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Hi this is brucely. I am using CNG because it is very good for the heavy vehicles. The vehicle will be run perfectly and it give a great millage.

 

This post is edited to remove the Link/URL that had no reference to the subject matter/discussion.



Last Updated: 11-Oct, 2008 10:49 PM, by Pankaj.Prasad
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#43 11-Oct, 2008 06:12 PM
Shravan
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Joined Date: 11 Oct 2008
Location: Hyderabad
Posts: 1
Likes: 0
Hi.. all...

I have planned to purchase a honda city 1.5 Exi 2003 model and later converting it with LPG kit, after going through this thread couple of days back. But, I pushed into a dilemma when i met the AUTO Consultant who offered me the above Car... saying LPG/CNG Kit won't be a good choice for CITY like MPFI engines as they only good with Carburator Engines...

Actually I got convinced by Mr. Bhanwari's detailed explanation how the both petrol and LPG fuels get burned and there is NO harm for the engine with LPG as they burnt completely with out leaving any harmfull substances in the Engine... But, this time the two techincal words kept in Dilemma.. So, please answer my doubt by explaining the function of both  MPFI and Carburator engines when LPG and Petrol used... and tell me... Shall i go for LPG kit for Old Honda City model or NoTT????


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#44 11-Jun, 2009 02:08 PM
Alex
Road-tested
Joined Date: 02 Jun 2009
Location: Bangalore
Posts: 86
Likes: 0

Posted by anurag

It isn't the case that CNG requires more maintenance but it definately reduces the performance of the car but then you save a lot of money. Fitting the CNG kit in old cars might bring about complications in the car because it cannot be as good as a factory fitted equipment, high maintenance issue might be due to this but otherwise CNG  won't contribute to higher maintenance as a "fuel." No difference in cost of maintenance for a car running on alternate fuel.

Karan owns a wagon-R duo(LPG), he knows better if there if any difference, so please comment on this Karan.

CNG cars available till date are Lancer, Optra(factory fitted) & Indica(after sales dealer fitment which is as good as factory fitted and warranty holds good.) Santro CNG will be out by year end.

Hi Anurang, i agree with your point

     I read the complete thread of this CNG Vs LPG. I found few info. on the same;

Go for CNG if 1) You are driving 50km/day 2) CNG is cheaper than LPG 3) Economical

Go for LPG if 1) You are driving less than 50km/day 2) LPG bit costlier than CNG

So whats the difference?

1) CNG installation costs ~2 times more than LPG

2) CNG affects Engine life than LPG

And before buying Check the Availability of the CNG centres

So my suggestion is to go for LPG if you are going to have the vehicle for long time, go for CNG if you have any plan of selling it after some years.Kiss



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#45 12-Jun, 2009 12:46 AM
Karan
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Joined Date: 25 Jan 2007
Location: Noida
Posts: 6815
Likes: 333

Well, the suggestion again would lead to more questions.

Questions that rise from within answers Foot in mouth.  Confused? Don't be, let me get in the BIG question again.

When Using LPG/CNG ,ultimately the BIGGEST aim is to SAVE more.

So your final suggestion may or may not "fit" in. Going for CNG if one plans to sell it after some years? Is it because the Life of the engine on cng would be shorter than life of the engine on LPG? Well its only marginally less, not a drastic difference. And also, the HUGE savings would still leave you with more money even if the Engine dies out fighting with a LPG engine comaparison.

Running Cost of LPG at present are good enough to make you save. But don't forget what happened in 2008. Please go through THIS.

Cheers.



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#46 28-Feb, 2012 12:26 PM
Siddharth Bhatia
New Arrival
Joined Date: 28 Feb 2012
Location: Bhopal
Posts: 1
Likes: 0

Hi All!

I've read all the threads above. Could please someone tell me that in today's senario:

(1) What would be the cost of the CNG and LPG kits?

(2) What is the difference between the cost of the CNG and LPG?

(3) What was that about their pressures? What is the capacity of the gas tanks?

(4) Can CNG and LPG kits be Interchanged?

(5) How easily is AutoLPG available in Delhi?

(6) Is it really true that LPG cools the engine?

(7) Can't these kits be fitted in diesel cars?

(8) I've heard something about a lambda with CNG kits. Any idea what is that?

(9) I own a Spark PS Oct 2008. It is MPFI. It has run 20,000 kms. Would it be beneficial to fit a kit now?

(10) Which is safer?

(11) What about the engine lubrication nowadays with CNG and LPG?



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