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Old 09-22-2013, 09:07 AM   #15
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Battery watering system

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Originally Posted by gripper View Post
As I see it, it's not so much, what it does for the batteries, it what benefits us, as the owner/operators get from the mineral oil. The oil cuts down on the sulfation of the plates and prevents or at least minimizes the "gassing" of the batteries. The gassing is what causes the acid built-up on the posts, wiring and the battery hold-downs, plus any metals around the batteries. The acid will eat thru the paint and reduce the metals to nothing, if left unchecked. The acid ate thru all my battery hold-down clamps and I had to replace everyone, at a cost of over $60.00.

I added mineral oil to my batteries over a year ago and have had no battery acid corrosion issues since. I also added the automatic water filling system and have had to add very little water since. I was having to clean the corrosion with bi-carb-soda, frequently, but now only spray water on the batteries, to wash off the dirt.
A heads up on battery watering systems if you have newer Interstate 4D-XHD house batteries. See post 3 in this thread.
Batteries
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Old 09-22-2013, 09:30 AM   #16
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In my experience if:
1. Your battery charger settings are correct.
2. Your batteries are not overcharging.
3. You do not over fill your batteries.
mineral oil is not useful, (and may be harmful ?).

My original 4 12V house batteries lasted 11 years, (over 75k miles).
The replacements are now 6 years old.

I've always checked the electrolyte level every 3 months, but I only need to add water every 6-9 months.

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Old 09-22-2013, 09:43 AM   #17
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curious to know if anyone uses mineral oil in the starting battery. mine is an 8D by deka (same as my house batteries, to be changed out with 6v deep cycle ones soon).
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Old 09-22-2013, 10:09 AM   #18
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Quote:
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curious to know if anyone uses mineral oil in the starting battery. mine is an 8D by deka (same as my house batteries, to be changed out with 6v deep cycle ones soon).
I did them all. All batteries can gas and corrosion can occur. Mine all sit together so what's good for the goose is good for the gander. No corrosion and they have not lost any water in over a year now. They have been saved and now are maintenance free.
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Old 09-22-2013, 12:46 PM   #19
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Quote:
Originally Posted by CountryFit View Post
curious to know if anyone uses mineral oil in the starting battery. mine is an 8D by deka (same as my house batteries, to be changed out with 6v deep cycle ones soon).
Suggest reading this attachment that talks about the difference between Deep Cycle and Starting Batteries. They are designed for specific applications.

Deep cycle battery - Wikipedia, the free encyclopedia
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Old 09-22-2013, 01:18 PM   #20
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The mineral oil has nothing to do with the chemistry of the charge-discharge cycle. Mineral oil is an organic compound and will do nothing except float around on top.

It will reduce the loss of water from evaporation. Not evaporation solely from just sitting there, but by being carried out when electrolyte is out gassing.

Mineral oil emulsified in the acid? Not likely. Could be a problem if the level gets so low that the oil covers the plates, just put more water in.

If it works in your application why not?
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Old 09-22-2013, 01:49 PM   #21
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Look at the wisdom of the elder Edison. He had some very crude cases for his batteries. Yet, mineral oil was a preferred treatment for the effects of gassing on the surrounding metal components. That is the only thing it will do and does not harm the function of the battery in any manner. How more clear can the link I posted be? I'm not asking for you to believe or trust me. Trust Edison. He was and is a whole bunch wiser than I am.

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Old 09-22-2013, 03:45 PM   #22
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Even with the hottest summer on record, my level didn't drop at all.
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Old 09-22-2013, 05:10 PM   #23
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Been on the road now for 3 1/2 months. Just tried to put water in the batteries and they are still full! Only some dust in the battery compartment -- no signs at all of any corrosion. This was one of the best ideas I came across while perusing this website. Highly recommend it.
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Old 09-23-2013, 01:33 AM   #24
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Here are two pictures of my batteries after four years with mineral oil in them and NEVER having been cleaned. They lasted one month short of 10 years and even then were doing fine, just that we were headed out on a trip and I didn't want trouble on the road. Batteries were OEM in 2002, oil was added in 2004 and pictures were taken in 2008.
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Old 09-23-2013, 07:43 AM   #25
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If you buy new batteries, do you have to remove acid/water before adding mineral oil? Or do just wait till the first time you add water and substitute the oil??
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Old 09-23-2013, 09:23 AM   #26
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I took out 4 ounces of acid from the battery (6 volt) and replaced with 4 ounces of mineral oil. I kept the acid for refill when necessary. I still have most of the acid, as they haven't needed much in the way of refill. Used an old turkey baster to remove the acid and a half gallon plastic milk carton to store and carry with me.
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Old 09-23-2013, 11:03 AM   #27
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Thermoil

Here is a store bought product. I don't know anything about it just saw it advertised. Probably nothing more than Mineral Oil.

Thermoil.com - Up to 3 times Longer Battery Life! Guaranteed.
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Old 09-23-2013, 11:13 AM   #28
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Mineral oil is a major ingredient in 3-in-1 oil.
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