Question on refilling liquid filled gauges

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I know this isn't about welding but I was hoping someone here has come across this problem before or has some resource that I have not been able to find. I have 3 new liquid filled gauges that I bought for real cheap because the liquid in them has slightly darkened. They are very usable the way they are but I would like to refill the liquid in them. There is a rubber plug in the top that can be pulled out to drain the fluid but I have been having a hard time finding some fluid to put back in them. I think the fluid is Glycerine. Does anyone know were I can get some Glycerine or any other fluid that will work in these gauges.
Reply:You can get glycerine at most drug stores.
Reply:You used to be able to get it at the drug store. I haven't checked in quite a while.
Reply:Hold on now...What are we using these guages for??Nothing to do with welding I hope.. ...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:LOL No they are for my air compressor when I start the project of converting it from horizontal to vertical. I thought I may as well put some nice gauges as well as a nice air filter and regulator on it also. I am going to have to weld up a completely new cage for the motor, pump and pulley. So do you guys think the Glycerine at the pharmacy is the same stuff used in gauges. Here is a link to a bottle at walgreens. I think it is vegtable based and I was wondering if it would go bad.http://www.walgreens.com/store/produ...d=prod3156422#
Reply:I think it's the same. If you have doubts McMaster-Carr has 99% pure glycerine. Look under industrial chemicals.
Reply:I have a glyceryn guage in my toolbox thats doing nothing...Want it?...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:mineral oil
Reply:The McMaster-Carr might be the way to go. Thanks for the info.Zapster, what kind of gauge is it that you have ie: pressure range and size and how much do you want for it.I was actually thinking about mineral oil but don't know how long it would last without turning colors.
Reply:You might find that the wrong fluid will damage the gauge- lift the markings from the face, etc.
Reply:Originally Posted by 737mechanicThe McMaster-Carr might be the way to go. Thanks for the info.Zapster, what kind of gauge is it that you have ie: pressure range and size and how much do you want for it.I was actually thinking about mineral oil but don't know how long it would last without turning colors.
Reply:Originally Posted by enlpckYou might find that the wrong fluid will damage the gauge- lift the markings from the face, etc.
Reply:IMO you don't need the liquid in the gauges for reading air pressures. The liquid filled gauges are for reading rapid and extreme hydraulic pressure changes that will shake the guts loose in a regular gauge.                    JMHO,                            MikeOl' Stonebreaker  "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:IMO you don't need the liquid in the gauges for reading air pressures. The liquid filled gauges are for reading rapid and extreme hydraulic pressure changes that will shake the guts loose in a regular gauge.JMHO,Mike
Reply:From an Instrument Technician:  Most gauges are filled with glycerin, mineral oil, or Silicone based fill fluid.  Probably Glycerine.  If it is Glycerine, use an industrial rated product, not drug store stuff.  I would try to contact the manufacturer regarding this first and verify the fill liquid.  I am unaware of any additives we ever used in guages.If vibration is a problem, remote mount the guages and use a short length of hose to dampen the vibration.Rob PageMiller Bobcat 250Lincoln SP170-T
Reply:your a very generous man there zap. with the free classes and guages and what not. lolhttp://datingsidorsingel.com/
Reply:737 Mechanic..Here's the pics I promised..Might be a little extreme for what you need but it's yours for the asking..If so then send me a p/m with your name and shipping address and we'll take care of it.. ...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Thats a nice gauge zap but I don't think I would be able to use one that high a pressure.Thanks for offering to send it to me that was very generous of you.
Reply:No problem bud..Its doing no good to me...Anyone need it??...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Hey zap I work hydraulics nearly every day and would put that guage to good use.
Reply:Originally Posted by tresiHey zap I work hydraulics nearly every day and would put that guage to good use.
Reply:Originally Posted by zapsterWell your the winner!!!P/M Me with the blah blahs.. Glad someone can get some use out of it.....zap!
Reply:Originally Posted by WANNAWELDGot anything else you want to give away
Reply:Originally Posted by zapsterI have an oceanfront cottage in Kansas... ...zap!
Reply:Originally Posted by tresiWould that cottage be near the old Navy base in Kansas? Yep, our government put a navy base in Kansas.Originally Posted by zapster Your guage is on the way.....zap!
Reply:Zap came through as he said he would. Thanks again
Reply:Originally Posted by tresiZap came through as he said he would. Thanks again