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

Joel McGregor joel at joelsplace.com
Fri Dec 15 14:48:13 EST 2017

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] On Behalf Of Larry Forman larry at forman.net [UltraVan]
Sent: Thursday, December 14, 2017 4:16 PM
To: M Stevens <viewmastermik at netscape.net>
Cc: virtualvairs at corvair.org; Ultravan Group <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.


On 12/14/2017 1:21 PM, M Stevens wrote:
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???


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

Good luck,

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