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Old 09-27-2015, 12:28 AM   #1
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Mineral Oil in Battery??????

Ok....I am assuming that one puts mineral oil in the the battery banks to stop, or slow, evaporation???
I am reading about this and I have never heard of this....under what rock have I been living.
Thoughts....??????
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Old 09-27-2015, 01:00 AM   #2
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Oil in battery

I'm almost certain it will ruin the battery.Batteries need acid to work oil would neutralize it.
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Old 09-27-2015, 06:39 AM   #3
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Be suspicious of anything you read on the internet at 2:28 AM!
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Old 09-27-2015, 06:43 AM   #4
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You would be sooo screwed!
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Old 09-27-2015, 06:50 AM   #5
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Mineral oil will not effect the sulfuric acid in battery electrolyte. This has been done for decades by railroads. I wouldn't do it because I want to check/service my lead acid batteries, not a problem. The real problem would be if the electrolyte level got lower then top of plates, I wouldn't like that. However, I may try it on this bank toward the end of battery cycle life to minimizes gassing and corrosion.
If you don't want to deal with wet battery service, get AGM's.
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Old 09-27-2015, 06:53 AM   #6
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Originally Posted by sewmun View Post
I'm almost certain it will ruin the battery.Batteries need acid to work oil would neutralize it.
My batteries(2-large 12v and 4 6v) have had mineral oil in them for years.......not only to slow evaporation, not one sign of corrosion anywhere. When we bought our Coach in '09, the batteries were brand new, but the tray/compartment was a big corroded mess! I performed a ground up restoration of the tray/compartment and studied on the mineral oil, added it, and it still looks perfect today.
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Old 09-27-2015, 08:21 AM   #7
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Originally Posted by palehorse89 View Post
My batteries(2-large 12v and 4 6v) have had mineral oil in them for years.......not only to slow evaporation, not one sign of corrosion anywhere. When we bought our Coach in '09, the batteries were brand new, but the tray/compartment was a big corroded mess! I performed a ground up restoration of the tray/compartment and studied on the mineral oil, added it, and it still looks perfect today.
Haven't seen Group 31, 12 volt starting batteries with removable (serviceable) cell caps in yrs. All have been "Maintenance Free" sealed batteries... jus sayin.
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Old 09-27-2015, 08:36 AM   #8
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Mineral oil floats on top of the electrolyte. It stops the gassing off during charge. You very seldom have to add water and absolutely stops corrosion in the bay. I have been doing this for years and never lost a battery. The nay sayers know not what they are talking about.
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Old 09-27-2015, 08:38 AM   #9
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Originally Posted by skypilot_1 View Post
Haven't seen Group 31, 12 volt starting batteries with removable (serviceable) cell caps in yrs. All have been "Maintenance Free" sealed batteries... jus sayin.
The only thing that seals them is the really sticky label across the caps.......once removed, you will find the flush mount, o-ring sealed caps.
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Old 09-27-2015, 08:51 AM   #10
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Originally Posted by Paramedic 1 View Post
Ok....I am assuming that one puts mineral oil in the the battery banks to stop, or slow, evaporation???
I am reading about this and I have never heard of this....under what rock have I been living.
Thoughts....??????
I have used it with great success! I have LifLines now, but before that I used mineral oil with no ill effects!
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Old 09-27-2015, 09:09 AM   #11
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Originally Posted by palehorse89 View Post
The only thing that seals them is the really sticky label across the caps.......once removed, you will find the flush mount, o-ring sealed caps.
(Click on Image to zoom in)
I know you can pry them open, but why would you want to put oil in a sealed battery. They don't vent gas or weep to cause corrosion. That was the point the industry went to sealed maintenance free batteries You can literally turn them up side down....not sure after having been opened.....jus sayin

Nice clean lookin bank...!
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Old 09-27-2015, 09:13 AM   #12
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can someone post details on doing this?
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Old 09-27-2015, 09:26 AM   #13
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This link addresses the subject.

RV NOW: RV Batteries Get Drug Store Treatment
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Old 09-27-2015, 01:44 PM   #14
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Originally Posted by skypilot_1 View Post
I know you can pry them open, but why would you want to put oil in a sealed battery. They don't vent gas or weep to cause corrosion. That was the point the industry went to sealed maintenance free batteries You can literally turn them up side down....not sure after having been opened.....jus sayin

Nice clean lookin bank...!
Sorry, I worded it wrong, they are screw in flush caps with a thin o-ring on them, no prying.......simply just un-screw them. All batteries are vented......, they have to be, or they would explode, and where there is a vent......evaporation can occur. When I first un-screwed the caps, the level was down. Another thread I was reading one day, lead me in this direction.
Maintenance free lead/acid water type batteries that are maintenance free(stickers across the flush caps, hiding them) are just used till they give up and then replaced. I believe these will last longer with proper maintenance. Going on 8 years old now, still pass a load test with flying colors..........

http://www.carquestprofessionals.com...faq_myths.html
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