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

Fri Dec 15 21:51:26 EST 2017

I once had a a Powerglide that had been sitting for some unknown length of 
time and had an unknown history before that.  It was similarly slow engaging 
either low or reverse from neutral.  I never timed it but it seemed like an 
eternity.  I assumed it was a valve not moving as intended.  I removed the 
pan and took the bottom off the valve body.  I cleaned the valves that can 
be accessed with what I had opened up.  That fixed it.  The total cost was a 
pan gasket and a valve body gasket, no snake oil required.

Jim Becker

-----Original Message----- 
From: Christy Barden via VirtualVairs
Sent: Friday, December 15, 2017 2:17 PM
To: Joel McGregor
Cc: virtualvairs at corvair.org ; Ultravan Group ; Christy Barden
Subject: Re:  [UV] Re: Powerglide fix: TransX versus Chemtool B12 in a pour 
can

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 A HALF OF THE BOTTLE.  IF YOU 
USE THE WHOLE BOTTLE YOU WILL MELT ALL THE SEALS AND HAVE TO PULL THE 
TRANSMISSION AND RE SEAL IT.  So I put 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 [UltraVan] 
> <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 <mailto:UltraVan at yahoogroups.com>] On 
> Behalf Of Larry Forman larry 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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