[T3] I pulled my Interstate battery july 12th to check thelevel , found the Interstae MT-42 was leaking.

[William J]

 I added enough water to make it about a 50/50 mix plus it was not that 
large an area . I first scrapped off the dry white crust then applied the 
soda mix , it only bubbled one time yet I did it 4 times. and now see shiny 
bare metal in that area. Each time I soaked a rag and wiped it up and the 
last time I used a bit more water then dried it with an old hair dryer then 
took a old shop vac and vacuumed all the left over bits of rust I scrapped 
off . I went over it twice with a small wire brush with the soda mix just to 
make certain in was working in well and also a brown scotch bright after the 
wire brush . Once the weather cools off hopefully by Nov I'll wire wheel the 
entire area and paint it. I never bothered before because all it had was 
surface rust just where the floor is not covered by the dk brown insulation 
stuff and all of that is stuck down real well and no rust at the edges.

 I also wanted to ask because I can't find any info . On these group 42 
batteries are all of them rebuilt ? I know the Interstate ones here are I 
had an Autozone battery before I got in 2009 and it looked new meaning the 
botton and sides were not all scratched up . I seems only older cars use 
this size . Before the Interstate I used to get them from a Ford dealer I 
worked at same exact battery and Interstate made them that was 2000 and 
don't recall them showing signs of being rebuilt. I imagine many newer car 
batteries are new yet there are only a few places that sell group 42 which 
as I said are all for older cars .
----- Original Message ----- 
From: "Jim Adney" <jadney at vwtype3.org>
To: <type3 at vwtype3.org>
Sent: Saturday, July 15, 2017 3:38 PM
Subject: Re: [T3] I pulled my Interstate battery july 12th to check thelevel 
, found the Interstae MT-42 was leaking.


> On 15 Jul 2017 at 14:19, William J wrote:
>
>>  I just mixed baking soda and water into a paste and let it sit a bit
>> then used a small brush to apply. I don't want to use much water since
>> flushing it all will go everywhere
>
> That's the right thing to do, but you have to use enough water to allow it 
> to
> soak into every place where acid might have gotten. Excess water is no
> problem. Excess soda is no problem. Excess acid IS a problem.
>
> You're done when wiping it up with a damp sponge and applying more
> water/soda mix doesn't cause any more bubbling. Then wipe up with a damp
> sponge, add just water, and wipe up again. Rinse and repeat. Let dry.
>
> I would treat the area with LPS-3 to prevent further rust, but it needs to 
> be
> completely dry first.
>
> The battery caps are ultrasonically welded to the body. Something went
> wrong here, and that's rare. It's a mature technology.
>
> -- 
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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