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NG Commercial longevity #4509584
09/06/17 09:42 PM
09/06/17 09:42 PM
Joined: Sep 2015
Posts: 904
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 904
California
Been seeing a lot of Natural Gas powered mass transit and waste management (trash trucks) running on NG systems. How is that tech evolving...are they reliable at this stage? Curious if anyone has any experience? What are typical lifespans?


2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8
Re: NG Commercial longevity [Re: mbacfp] #4509693
09/07/17 06:07 AM
09/07/17 06:07 AM
Joined: Aug 2010
Posts: 6,071
Champlain/Hudson Valley
Kira Offline
Kira  Offline
Joined: Aug 2010
Posts: 6,071
Champlain/Hudson Valley
Asked myself that same question when I saw all the LPG people movers in Yosemite National Park.

They weren't LNG, I know.

Re: NG Commercial longevity [Re: mbacfp] #4509762
09/07/17 07:35 AM
09/07/17 07:35 AM
Joined: Oct 2009
Posts: 3,690
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,690
Wet side WA
NG and Propane systems have been reliable for years. A friend of mine had one on his Chrysler with a 400 cubic inch V8 it really ran clean. His oil would hardly discolor. The car had 400,000 miles on it the last time I saw it.


2004 Corolla 128276
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74615
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: NG Commercial longevity [Re: mbacfp] #4509815
09/07/17 08:45 AM
09/07/17 08:45 AM
Joined: Sep 2015
Posts: 904
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 904
California
Thanks for sharing. Wonder why all this push for electric if LNG might also have some merits? Was just curious why not more main stream for individual commuter cars. Thought it was a reliability issue. Take care.

Last edited by mbacfp; 09/07/17 08:46 AM.

2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8
Re: NG Commercial longevity [Re: mbacfp] #4509846
09/07/17 09:33 AM
09/07/17 09:33 AM
Joined: Jun 2015
Posts: 4,565
New England
Virtus_Probi Offline
Virtus_Probi  Offline
Joined: Jun 2015
Posts: 4,565
New England
Originally Posted By: mbacfp
Thanks for sharing. Wonder why all this push for electric if LNG might also have some merits? Was just curious why not more main stream for individual commuter cars. Thought it was a reliability issue. Take care.


Think the big thing is that we have a nationwide network for electricity distribution and not for natural gas, although the latter has some extensive local networks.

I don't believe NG has any major CO2 mitigation benefits over what we already have in place...hydrogen fuel cells offer the advantage of water being the waste byproduct with no CO2 emissions, but obviously a brand new distribution network is needed for that to work.


2014 Forester XT, 95000 miles
Last Change;
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Re: NG Commercial longevity [Re: mbacfp] #4509923
09/07/17 11:19 AM
09/07/17 11:19 AM
Joined: Aug 2002
Posts: 14,631
Silicon Valley
PandaBear Offline
PandaBear  Offline
Joined: Aug 2002
Posts: 14,631
Silicon Valley
I was thinking about getting a Civic GX back when my wife was thinking about a 2nd car that can go on HOV lane, but Leaf range was too short and Tesla was too expensive. Turns out a lot of big problem for personal vehicles using CNG:

1) The CNG tanks take up a lot of space, almost half if not the entire Civic trunk.
2) The CNG tanks are only certified for 15 years, so you either junk it for pay a huge fortune to replace it at 15 years. It cost almost the same as an EV battery (around $5k).
3) The pumping sucks if you do public pumping. You either wait in line with a bunch of garbage trucks and then another 10 mins to pump it to full pressure, or you go to a retail pump that may be broken and not worth the cost to fix (and therefore not fixed).
4) Some model years of the GX have a very bad CVT that won't last more than 100k, often only 60k.
5) EV charging is typically free for many large employers here, CNG cost around $2 for a gallon of gas equivalent of energy.


In conclusion, it is really only fit for fleet service before the proliferation of cheap EV and plug in hybrid.


"You keep asking questions PandaBear and you'll end up a vegetarian like my wife" - Camu Mahubah
Re: NG Commercial longevity [Re: PandaBear] #4509930
09/07/17 11:27 AM
09/07/17 11:27 AM
Joined: Jan 2004
Posts: 4,639
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,639
California
Originally Posted By: PandaBear

2) The CNG tanks are only certified for 15 years, so you either junk it for pay a huge fortune to replace it at 15 years. It cost almost the same as an EV battery (around $5k).
3) The pumping sucks if you do public pumping. You either wait in line with a bunch of garbage trucks and then another 10 mins to pump it to full pressure, or you go to a retail pump that may be broken and not worth the cost to fix (and therefore not fixed).

SoCal has a whole fleet of CNG/LNG buses and the FTA dictates buses bought with federal funds to hold up for 12 years, so the 15-year design life of a composite CNG tank is sufficient. The drivetrain, not so much. LACMTA and OCTA were using Detroit Diesel's S50 CNG, and flirted with Cummins or Doosan engines as repowers. The Bay Area stuck with diesel and hybrids, while SoCal is almost always xNG for public fleets.

However, CNG doesn't have the same power output as diesel or hybrids. SFMTA was looking into CNG buses, but they didn't do too great with the hills in San Francisco and having to deal with fueling/gas detection. SF's trash trucks are still diesel, but Oakland's trucks are moving to LNG.

It hasn't caught on for cars in the US - even with taxicabs and I remember the CNG Crown Vic, CNG Chrysler K-Cars and Civic being used by public fleets and taxis. The Prius and Escape Hybrid killed that off. Autogas is big in Australia however, must be gas prices down there.

Last edited by nthach; 09/07/17 11:30 AM.
Re: NG Commercial longevity [Re: mbacfp] #4509986
09/07/17 12:36 PM
09/07/17 12:36 PM
Joined: Dec 2006
Posts: 19,251
Dallas,Tx USA
aquariuscsm Offline
aquariuscsm  Offline
Joined: Dec 2006
Posts: 19,251
Dallas,Tx USA
I remember seeing natural gas fleet cars in the 80s. I still very seldom ever see them. Did the technology just not evolve?


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 5W20

Re: NG Commercial longevity [Re: mbacfp] #4510459
09/07/17 08:42 PM
09/07/17 08:42 PM
Joined: Dec 2012
Posts: 1,464
New Mexico, USA
jimbrewer Offline
jimbrewer  Offline
Joined: Dec 2012
Posts: 1,464
New Mexico, USA
Home LNG stations are problematic. They fill the tank using a compression approach=more moisture in fuel. Commercial facilities use a cryogenic approach = dryer approach.

On again off again support by local gas company. Opened up a string of facilities with much fanfare. Then closed them a couple of years later. So sorry.

Re: NG Commercial longevity [Re: mbacfp] #4510460
09/07/17 08:42 PM
09/07/17 08:42 PM
Joined: Dec 2012
Posts: 1,464
New Mexico, USA
jimbrewer Offline
jimbrewer  Offline
Joined: Dec 2012
Posts: 1,464
New Mexico, USA
Home LNG stations are problematic. They fill the tank using a compression approach=more moisture in fuel. Commercial facilities use a cryogenic approach = dryer approach.

On again off again support by local gas company. Opened up a string of facilities with much fanfare. Then closed them a couple of years later. So sorry.

Re: NG Commercial longevity [Re: mbacfp] #4510808
09/08/17 10:50 AM
09/08/17 10:50 AM
Joined: Jan 2004
Posts: 4,639
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,639
California
Honda was also wanting owners of the Civic NG to install their home filling point PHill but home natural gas is distributed at lower pressures. It was slow as well.


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