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#2588282 - 04/03/12 01:18 PM Oil for engines running LPG, CNG, or Propane
Loobed Offline


Registered: 07/20/07
Posts: 3742
Loc: Northern California, USA


I noticed on the Valvoline website that they have an engine oil specifically for Compressed Natural Gas, Liquid Petroleum Gas, and Propane. There is nothing special in their PDS http://www.valvoline.com/pdf/premium_blue_geo.pdf What makes this oil different (besides marketing)?

http://www.valvoline.com/products/commercial-industrial-products/oem-endorsed-products/71
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Engine: 2001 GM 5.3L LM7
Current Fill: Valvoline Synpower 5w-30 w/Pure-One PL25288 filter

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#2588341 - 04/03/12 01:58 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
carwreck Offline


Registered: 04/04/09
Posts: 464
Loc: CT
Valvoline’s Premium Blue® GEO meets the "Natural Gas Engine Oil – CES 20074 Cummins Specification"

http://www.cumminswestport.com/pdf/technical_bulletins/2009-05_Natural_Gas_Engine_Oil.pdf

"Do not use diesel engine oil in a natural gas engine. If diesel engine oil is used, valve torching, piston scuffing, and reduction in spark plug life will occur."

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#2588360 - 04/03/12 02:13 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
Rob_Roy Offline


Registered: 10/26/08
Posts: 852
Loc: Northern, NY
Originally Posted By: Loobed
There is nothing special in their PDS


Take a look at the ash content.
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2015 Subaru Legacy 3.6
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#2588376 - 04/03/12 02:23 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Rob_Roy]
Loobed Offline


Registered: 07/20/07
Posts: 3742
Loc: Northern California, USA
Originally Posted By: Rob_Roy
Originally Posted By: Loobed
There is nothing special in their PDS


Take a look at the ash content.



Propane produces a lot of water. Would the reduction in sulfated ash reduce the formation of acids?
_________________________
Engine: 2001 GM 5.3L LM7
Current Fill: Valvoline Synpower 5w-30 w/Pure-One PL25288 filter

I.M.N Oil Enthusiast

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#2588438 - 04/03/12 03:19 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
Burning gasoline in an engine produces a lot of water.

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#2589007 - 04/03/12 10:02 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
Garak Offline


Registered: 12/05/09
Posts: 12688
Loc: Regina, Saskatchewan, Canada
Some of the oils marketed towards LPG and so forth have lower TBN, too. These fuels eliminate the problem of fuel dilution, among other things.
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Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#2589020 - 04/03/12 10:12 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
3311 Offline


Registered: 07/24/10
Posts: 1114
Loc: Fl
IIRC those engines combustion burn hotter and require different ash levels?
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04 2500hd 6.0 271k/18k edg 0w40 XG3675 VML ATF PGL
03 C7500 Dmax7.8l 134k ST 15w40,M1ATF Dexcool
06 2500hd 6.0 207k ? 5w30 ST DexVI PGL

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#2589031 - 04/03/12 10:25 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
Garak Offline


Registered: 12/05/09
Posts: 12688
Loc: Regina, Saskatchewan, Canada
That might be part of the issue, too, 3311. However, when running a propane taxi fleet, I never bothered with any CNG/LPG/Propane oils. It was simple Quaker State conventional 10w-30 at 6,000 mile OCIs.

The biggest issue on propane at the time was the same as the introduction of unleaded gas. Hardened valves of the time weren't as "hard" as they should be, and in the early years, didn't stand up as well as they should have, whether on unleaded or on propane. Heat might have been a bit of an issue, but there certainly was no problem with carbon deposits.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#2589037 - 04/03/12 10:31 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
3311 Offline


Registered: 07/24/10
Posts: 1114
Loc: Fl
I think Dino FS is suitable for propane as well.
_________________________
04 2500hd 6.0 271k/18k edg 0w40 XG3675 VML ATF PGL
03 C7500 Dmax7.8l 134k ST 15w40,M1ATF Dexcool
06 2500hd 6.0 207k ? 5w30 ST DexVI PGL

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#2589206 - 04/04/12 07:12 AM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
A_Harman Offline


Registered: 10/01/10
Posts: 4981
Loc: Michigan
Gas engine oils are formulated for low or no ash. Ash deposits in the combustion chambers form over time and lead to detonation or preignition in high-BMEP gas engines. Since most gaseous fuels have no sulfur, high TBN is not needed, so the oils can be formulated to produce no or very little ash. The main problem with converting gasoline engines to run on propane or natural gas is intake valve seat wear due to "dry" conditions in the intake system. Hard valve seats are required; materials such as Stellite or Triballoy are popular in such applications.


Edited by A_Harman (04/04/12 07:12 AM)
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#2589952 - 04/04/12 07:02 PM Re: Oil for engines running LPG, CNG, or Propane [Re: Loobed]
Garak Offline


Registered: 12/05/09
Posts: 12688
Loc: Regina, Saskatchewan, Canada
Also, the mention about not using diesel oil in an LPG/CNG engine is a bit odd, and certainly has no context. I would certainly advise against using a diesel only engine oil in a sparker. Do they mean not to use the latest diesel specs? When was the quote written?

Back in the day, most PCMOs had a diesel specification as well, and were used without issues in propane engines.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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