<VV> [UV] Re: Powerglide fix: TransX versus Chemtool B12 in a pour can

Larry Forman larry at forman.net
Fri Dec 15 17:15:08 EST 2017

Hi Christy,
Well, that is very interesting.   Did you need to drain the old fluid 
and replace?    I ask because the Powerglide fluid I have is bright red 
and would normally not need replacing.   I now feel symptoms that since 
I did not drain the old fluid, and after the Chemtool B-12 has started 
to evaporate, the shifting is getting sluggish again.

As much as I love Summit Racing, the shipping kills me for orders less 
than $99.   I just searched Amazon and I can order the ATP AT-205 
Re-Seal from them for $11.74 plus tax and free shipping for my Amazon 
Prime.   If I do not need to replace all the Powerglide fluid, that is a 
less expensive approach.

Thanks for the info.


On 12/15/2017 12:17 PM, Christy Barden christybarden at cs.com [UltraVan] 
> I have also tried  TransX to no avail.  My 65 4 door and Ultra Van 
> both had Powerglide problems.  The 65 4 door would not shift into high 
> gear until it warmed up, which took several miles.  The Ultra van took 
> up to 15 seconds to shift into reverse.  At a CORSA Convention a few 
> hears ago I spoke with Larry Claypool about my powerglide  problems. 
>  He recommended  AT-205 Re-Seal by ATP Automotive.  He warned ONLY USE 
> ½ the bottle in the 65 4 door with 200K on it and it started to shift 
> normally and still does.  The other ½ went into the Ultra Van and now 
> it shifted in to reverse normally.  I have 125K on the Ultra Van 
> powerglide.  I purchesed it from Summit Racing in Reno, about $10.
> Christy
>> On Dec 15, 2017, at 11:48 , Joel McGregor joel at joelsplace.com 
>> <mailto:joel at joelsplace.com> [UltraVan] 
>> <UltraVan-noreply at yahoogroups.com 
>> <mailto:UltraVan-noreply at yahoogroups.com>> wrote:
>> Aren't a lot of their products called B-12?  I'm assuming you are 
>> talking about the fuel system cleaner that you normally pour in the gas?
>> *From:*UltraVan at yahoogroups.com 
>> <mailto:UltraVan at yahoogroups.com>[mailto:UltraVan at yahoogroups.com]*On 
>> Behalf Of*Larry Formanlarry at forman.net 
>> <mailto:larry at forman.net>[UltraVan]
>> *Sent:*Thursday, December 14, 2017 4:16 PM
>> *To:*M Stevens <viewmastermik at netscape.net 
>> <mailto:viewmastermik at netscape.net>>
>> *Cc:*virtualvairs at corvair.org <mailto:virtualvairs at corvair.org>; 
>> Ultravan Group <ultravan at yahoogroups.com 
>> <mailto:ultravan at yahoogroups.com>>
>> *Subject:*[UV] Re: <VV> Powerglide fix: TransX versus Chemtool B12 in 
>> a pour can
>> Yes!    Like magic..  Except that you likely will need to drain a 
>> pint out and doing that is a little difficult to get enough but not 
>> too much drained.   If you drain too much then you might need to add 
>> a little tranny fluid with the Chemtool B-12 to bring it up the the 
>> full line when the engine is running.
>> Larry
>> On 12/14/2017 1:21 PM, M Stevens wrote:
>>     Larry,
>>     Do I have this correct? You pour B-12 into tranny as is, drive
>>     around a bit, then drain and fill with only fresh trans fluid.
>>     Problem solved???
>>     Mike
>>     Sent from my putt putt phone...
>>     -------- Original message --------
>>     From: Larry Forman via VirtualVairs<virtualvairs at corvair.org>
>>     <mailto:virtualvairs at corvair.org>
>>     Date: 12/14/2017 12:09 PM (GMT-08:00)
>>     To:virtualvairs at corvair.org <mailto:virtualvairs at corvair.org>,
>>     Ultravan Group<ultravan at yahoogroups.com>
>>     <mailto:ultravan at yahoogroups.com>
>>     Subject: Powerglide fix: TransX versus Chemtool B12 in a pour can
>>     Hi All,
>>     The Powerglide in my 65 Monza vert. came with a first to second
>>     upshift
>>     slippage for about a second each upshift.   For automatic
>>     transmissions
>>     with this problem I have (thus far) always been successful using
>>     a can
>>     of Chemtool B12 poured into the transmission once I drained out a
>>     pint
>>     or so of fluid.   Then I drive around the block and magically the
>>     shifting is cured.   Then I needed to drain the tranny fluid to
>>     remove
>>     and replace the fluid.   Otherwise, after a day or a few days the
>>     upshifting problem returns when the Chemtool B12 evaporates.
>>     However, I had been told that TransX is specifically designed to
>>     do the
>>     same thing and since it was designed specifically for automatic
>>     transmissions, I assumed it would work better.    WRONG!
>>     I tried adding TransX to the Powerglide and ... NOTHING.   For about
>>     $12, I certainly expected more.   Then I went back to Plan A using
>>     Chemtool B12 (for about $5) and it magically fixed the upshifting
>>     issue
>>     with a drive around the block.    Since I had changed several
>>     pints of
>>     tranny fluid I will see if I need to drain the tranny as I have
>>     needed
>>     to do in the past.
>>     So if you have shifting issues with your automatic transmission, try
>>     Chemtool B12 in a pour can and see if it fixes your tranny.   If
>>     you do
>>     not drain and replace the fluid and the problem returns, then you
>>     will
>>     need to repeat the Chemtool B12 addition and then drain and
>>     refill the
>>     tranny.
>>     Good luck,
>>     Larry
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