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#4443587 - 06/28/17 09:29 AM felt pads don't work
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4838
Loc: Houston, Texas
I looked under the hood a few days ago and it looks like the acid actually ate away at the negative battery terminal. It might look worse than it is, idk. I keep forgetting to clean it off. The battery on the other side is clean. What happened? I've been using felt pads and battery grease for a long time and I thought it cured this problem.
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#4443594 - 06/28/17 09:33 AM Re: felt pads don't work [Re: motor_oil_madman]
SHOZ Offline


Registered: 06/28/03
Posts: 5744
Loc: Illinois
If indeed the acid ate away at the lead terminal it was a very concentrated form. This could be from water evaporating from the acid that is leaking and absorbed by the felt pad.
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#4443609 - 06/28/17 09:47 AM Re: felt pads don't work [Re: motor_oil_madman]
mk378 Offline


Registered: 09/27/15
Posts: 1414
Loc: USA
If the seal in the battery is bad, it will leak more acid than the pad can handle.

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#4443622 - 06/28/17 09:56 AM Re: felt pads don't work [Re: motor_oil_madman]
CT8 Offline


Registered: 10/09/14
Posts: 10934
Loc: Idaho
Time for a new battery and go from there. Exide battery?
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#4443628 - 06/28/17 10:02 AM Re: felt pads don't work [Re: motor_oil_madman]
Langanobob Online   content


Registered: 04/24/09
Posts: 208
Loc: Reno, Nevada
I've been running AGM batteries in my F250. Pricey but no corrosion. I think that well maintained flooded batteries may last longer but the batteries seem to be holding up fine.

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#4443635 - 06/28/17 10:07 AM Re: felt pads don't work [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4838
Loc: Houston, Texas
Will they warranty that? I swear I had autozone put these batteries in not too long ago. Actually this set has already been warrantied.


Edited by motor_oil_madman (06/28/17 10:08 AM)
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2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4443699 - 06/28/17 11:07 AM Re: felt pads don't work [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4838
Loc: Houston, Texas
A leaking battery post that is.
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2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4443707 - 06/28/17 11:13 AM Re: felt pads don't work [Re: motor_oil_madman]
mk378 Offline


Registered: 09/27/15
Posts: 1414
Loc: USA
They will but it would have to be a pretty big obvious leak. Also they could accuse that you broke it by external force on the post.

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#4443710 - 06/28/17 11:14 AM Re: felt pads don't work [Re: motor_oil_madman]
andyd Offline


Registered: 09/25/04
Posts: 7138
Loc: Marshfield , MA
I made a set of felts and soaked them in motor oil. They are on their second battery. Thanks to hanging here, I use a 1/2 amp floater in an attempt to keep the battery healthy. It is a 5 bucker from Harbor Freight. Seems to be working. grin2
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#4443721 - 06/28/17 11:17 AM Re: felt pads don't work [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4838
Loc: Houston, Texas
I know in the winter time my abs and parking brake light comes on a second time after starting and that's when I know the batteries are weak. It also will throw a transmission code, but I forgot what it is. It hasn't done any of that yet though.
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2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4443829 - 06/28/17 12:36 PM Re: felt pads don't work [Re: motor_oil_madman]
E150GT Offline


Registered: 03/11/12
Posts: 1093
Loc: San Antonio, TX
I use felt pads and dielectric grease. Also don't tighten the terminals real tight and make sure the battery is bolted down properly.
I would have to assume the post got torqued enough to break the seal. Sometimes when trying to pry a stuck terminal you can break the post sel if you're not careful.
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#4443928 - 06/28/17 01:49 PM Re: felt pads don't work [Re: motor_oil_madman]
SatinSilver Offline


Registered: 01/24/08
Posts: 10132
Loc: OH
Get a Value one at Walmart for $48 and for an extra $3.50 they do the NOCO treatment which includes felt washers.

If spending around the $100 mark I'd go to Batteries Plus for a Duracell/East Penn battery. Coming up on the 5 year mark for the Rural King Exide battery. Had the NOCO treatment done and no more green fuzz on the positive terminal. Clean as a whistle.


Edited by SatinSilver (06/28/17 01:50 PM)

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#4444076 - 06/28/17 04:07 PM Re: felt pads don't work [Re: SatinSilver]
87sammy Offline


Registered: 11/04/05
Posts: 101
Loc: justin , tx
I just use Plano wheel bearing grease all mine never any problems.

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#4444116 - 06/28/17 04:53 PM Re: felt pads don't work [Re: motor_oil_madman]
Eddie Online   sleepy


Registered: 12/07/03
Posts: 9559
Loc: Florida, Cape Coral
+1 for BATTERIES PLUS. Dekta batters seem to be very well made. ed
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#4444595 - 06/29/17 07:57 AM Re: felt pads don't work [Re: motor_oil_madman]
The_Eric Offline


Registered: 03/31/10
Posts: 5354
Loc: Iowa
You want to know what works? Buy a battery that doesn't barf it's acid all over in the first place.

#1 worst is Exide. #2 is JCI. They do it too- maybe 70% of them do it, whereas at least 80% of Exide batteries do.

East Penn/Deka is the only battery that I've seen that consistently doesn't puke it's acid all over.

Now there are a few caveats- any battery will puke acid if you hulk out on the cable bolt and over tighten it! You'll either crush the post and break the seal, or you'll torque it (think bend it sideways) so much that the seal is broken that way. Severe over charging will do it to. Also, when it comes to East Penn made batteries, they still have a few battery BCI numbers out there that have a conventional cell cap on them (only applies to auto/light truck- AG and heavy truck is a different animal). BCI group 58 for Fords and 27 for Dodge comes to mind.
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