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Green Gas And Propane?


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#61 akiraspeedstar

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Posted 19 September 2012 - 11:26 AM

Well considering those small cans of propane cost about $2.50, I'd imagine that large can would fill more then three of the smaller disposable cans.

Ive actually considered the same idea before, never go around to actually doing it though.

#62 Chuck S

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Posted 19 September 2012 - 04:31 PM

A gallon of propane weighs 4.2 pounds so the 2.5 gallon cylinder will have 10-1/2 pounds of propane.  The little camping propane cylinders hold 1.02 pounds according to the label (where the 0.02 pounds came from I've no clue).  The 2.5 gallon cylinder will have well over 10x what the Coleman cylinder holds and 20x what a green gas can holds (8oz or 1/2 pound).  

The economics of propane can't be ignored as it's only 5% of the cost of green gas and I'd think the 95% cost savings would more than pay for some internal repair parts.  A 12-can case of green gas has 6 pounds of gas.

That said I'm using green gas exclusively.

-- Chuck

#63 darkbluedean

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Posted 19 September 2012 - 06:44 PM

I just emptied 3 PMAGs and a half with one fill.

Edited by darkbluedean, 19 October 2012 - 09:56 PM.


#64 nepenthe

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Posted 28 November 2012 - 11:36 PM

I did a semi thorough internet search on the subject and feel pretty comfortable that green gas is simply propane with silicone added, and no methane for odor. Which had always been my understanding.

I also found more than one site that answers the question of whether propane is corrosive: the answer is yes, it is an excellent solvent for petro-chemical based materials (plastic) and rubber.

So, since both Green Gas and Propane seem to be corrosive to some of your guns internals, what is the answer? First, heed what KWA requires during the warranty period: no propane. Second, lubricate your gun with a non-solvent based lube. I've been using pure silicone oil (Check the labelling: some "Pure Silicone" lubes have solvents) or pure lithium grease to lube my gas guns for a few years now. I also give my mags a squirt of green gas occasionally just to inject a little silicone into them to keep the seals fresh, and then use propane the majority of the time. I have found that aside from GG being so expensive it just puts too much silicone into my mags if I use it all the time, eventually works its way into the hop up, the barrel, etc, and it's a mess. So I do the combo thing, and use the GG sparingly.

Also, lubing your gun with a lubricant that won't hurt the plastic or rubber parts protects those parts from the corrosive effect of Propane/Green Gas, just like gun oil protects real weapons from the corrosive gasses from gun powder. And clean your gun, don't use profane language, and help little old ladies across the street.

#65 ATOMANT

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Posted 16 December 2012 - 04:29 PM

I can tell you one thing I found out about propane here in Canada. Apperantly the propane we receive here in south central BC come from a small family run gas well in Edson Alberta Canada. So now knowing this, that buyers can perhaps source there propane from inferior supplies who may not refine the raw material and allow more petroleum distalits along with the propane. Its these propertys that may have an adverse effect on the seals etc inside the gun.

#66 akiraspeedstar

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Posted 20 December 2012 - 08:50 AM

Forgot if I had posted this video here or not, if not here you all go.



#67 sbadalamente

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Posted 24 December 2012 - 09:49 PM

Green gas is propane with the addition of silicone ... Green gas is propane without Ethanethiol (smelliest substance in the world)

Propane is a combination of carbon and hydrogen ... C3, H8 ... 3 carbon molecules and 8 hydrogen molecules

Propane is a petroleum byproduct

The Ethanethiol added to propane is an alcohol and as someone posted earlier it can react with transition metals... Mercury, copper, and nickel

Ok, so I'm a little nerdy ... I work in a file that requires knowledge of chemistry but I'm no expert.

The concern here is NOT propane, it's the lubrication. Propane is stored as a liquid and temperature plays a roll in pressure and volume of gas and liquid at the time of storing ... Storing meaning when it's put in the can or a magazine. Propane manufactures operate within consistent parameters when producing and storing propane... We do not.

In any event, it's the ratio of propane to silicone lubrication that is of concern... Too much or not enough silicone

I'm no expert in producing propane or green gas but I suspect each can of green gas gets an exact amount of oil at a specific temperature. Then straight propane is added without Ethanethiol. This method insures the same ratio of lubricant and propane at any temperature. If you have 2 ounces of silicone at 70 degrees and 14 ounces of propane you still have the same amount at 90 degrees or 50 degrees ... Only the volume changes ...

I don't think we can accurately produce the propane to silicon ratio by mixing ourselves. I'm sure we can come close. It's the ratio of propane to gas that's important here and I believe the engineers at KWA figured on a precise amount of propane and silicone. You can run a gasoline engine designed to run premium on regular; however it won't run as good as it could with the right fuel.

Perhaps internal lubricants like a Teflon coating could be used to improve the lubrication of moving parts?

The bottom line here is we want consistency in our guns and self mixing fuel and lubricant is not consistent. Will our guns wear prematurely using propane? Yes and no. We are using propane ... Wear is dependent on lubrication. If you use less lubricant the gun will wear ... Use too much and other problems will occur... Use exactly what was intended when the gun was designed and I think you'll be ok.

Regarding the smelliest stuff ever and saving money ... Here is a link to an MSDS sheet from The Department of Labor ... http://www.sciencela...?msdsId=9923940

This is all you want to know about the smelly stuff they put in propane ...  Ethyl Mercaptan ... While it may not kill you it can cause irritation, sore throat, nausea, stomach pain, headache, drowsiness, dizziness, loss of coordination; AND there is no data on long term effects of exposure.

Nevermind the warranty on the LM4, how much is your health worth?

I run green gas ... My 2 cents

#68 kwaispro727

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Posted 24 December 2012 - 11:14 PM

No matter how many times this subject is talked about, it always ends with green gas, and yet we all continue to ask it (including myself).  By definition, we are all insane :D

#69 sbadalamente

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Posted 25 December 2012 - 09:20 PM

View Postkwaispro727, on 24 December 2012 - 11:14 PM, said:

No matter how many times this subject is talked about, it always ends with green gas, and yet we all continue to ask it (including myself).  By definition, we are all insane :D

Lol! Insanity ... Yes

#70 Theshank

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Posted 26 December 2012 - 08:04 AM

You can see at a specific ambient temperature the actual presure of propane. Posted Image

#71 sbadalamente

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Posted 26 December 2012 - 10:40 AM

I've read some of the performance barrels are manufactured using nickel .... Ethyl Mercaptan may react with the nickel according to the chemical's characteristics.

FYI ... Talking with my buddy this morning who said "hell no I'm not paying for green gas" the moment he removed his LM4 from the box. He's experienced a multitude of problems... Feeding, jams... Asked me if I want to go in on a case of green gas :)

#72 akiraspeedstar

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Posted 26 December 2012 - 11:02 PM

Im assuming he adds silicone to his Propane? He probably swelled his bucking.

When I run propane I run it "dry" and only add silicone for storage.

#73 JonathanNCP

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Posted 07 January 2013 - 09:41 AM

I use propane exclusively (except when I store the mags). I cannot afford to run green gas and have the LM4 as a primary. 2 other people here locally do the same and recommend it. A buddy also asked me this past holiday how it runs on propane because that is a deal breaker for him. Fortunately it runs fine and he is happy with his new LM4. Its a hard sell when the gun is expensive, the mags are expensive, and plan on forking out money like a paintballer to shoot it.

#74 pippin65

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Posted 10 January 2013 - 02:16 PM

hi, noob question.  I'm using the the plastic tip airsoft innovations propane adapter on my lm4.. what is the best practice for adding silicone oil to the mags?  a few drops on the fill valve then filling with propane?  also how often should one put silicone into the mags? each refill? every third? please help

#75 akiraspeedstar

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Posted 10 January 2013 - 05:09 PM

I run my propane "dry" and only add silicone for storage purposes.

#76 Raptor72

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Posted 10 January 2013 - 05:54 PM

I also run dry and lube during cleanings.

Sent from my Nexus 7 using Tapatalk HD

#77 jonsun81

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Posted 27 January 2013 - 09:27 AM

Remove the adaptor and add 3 drops of pure silicone to the propane can.  Do so every 4-5 mag fills and you got smelly green gas.  I've honestly never had a problem with propane.  Clean my gun after every op and my guns really not that dirty and unless multiple people have catastrophic gun failure due to propane I will co.tinue to use it.

#78 General Pickle

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Posted 27 January 2013 - 10:42 PM

Both my MP7 and my MKII have been munching on propane for over a year now, zero leaks on any of my 9 mags, a couple minor internal problems, however I believe they were caused by extreme temperatures, nothing I couldn't fix though. I'll have a PTS LM4 in about a week, I'll be running that on propane just like my other guns. Fingers crossed, I'll post my results when I have them.

#79 Chuck S

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Posted 28 January 2013 - 03:41 PM

There's a warning on the green gas can that reads: "Burning propane can make carbon monoxide."  Even the makers acknowledge green gas is a variety of propane.  :)

-- Chuck

#80 Zulu647

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Posted 29 January 2013 - 01:16 PM

okay so I was reading the back of greengas can under the Carbon Monoxide Hazard warning and it says exactly this.
"burning the contents of this canister,whose primary component is propane..." that is on a LIGHTNING BOLT can of green gas. On the King Arms can it says "burning propane can make carbon monoxide.." thus implying that it is primarily propane with what ever else is in it.




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