[Oletrucks] dextron vs mercon

[jay]

My turn to jump in here...

I am not a tranny man but my ex-bro-inlaw has done nothing except build trannys since before he was released from High School....
about 30 years of building t's.

He always used F%$* tranny fluid in stock daily drivers. That type lets the clutches grab quicker reducing the smooth slip/grip. I
was told that the quicker the grab the less heat and ware prolonged the life surface of the clutches.

Now,, to racing trannys and off road trannys: Same story.

Just before Alan passed on I was running a 10 second powerglide with e-Brake, I launched from the line at 6K rpm. The first 68 feet
the front tires were off the ground about 2-5 inches. When I first got the tranny I used B&M fluid.... he made me change to F&^%
fluid... yes it did help, stayed cleaner longer and didn't have a failure for 3 years on that powerglide..


In closing I will always use F$&$ fluid!


Jay

"When  In Doubt, Empty The Magazine"

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-----Original Message-----
From: oletrucks-bounces at autox.team.net [mailto:oletrucks-bounces at autox.team.net] On Behalf Of Robert Swanson
Sent: Monday, April 19, 2010 2:41 PM
To: oletrucks at autox.team.net
Subject: Re: [Oletrucks] dextron vs mercon

	The short answer is, that you can supposedly use the newer dextron fluids in 
a transmission requiring Mercon, but not the other way around.  The fluids 
that meet the specs for both transmissions will indicate that fact on the 
label.  For thirty years, I have been selling a synthetic fluid that exceeds 
the specs for both fluids, and this question has come up repeatedly.  
	I am going to guess that there is an exception somewhere, but I have not seen 
a GM transmission that required a Mercon fluid.
Bob

On Monday 19 April 2010 10:49, Tom Cooper wrote:
> The only explanation I have is that the guy that built my tranny to use the
> Mercon because it is suppose to help it shift better.. I'm jusdt wondering
> if there is a big difference, and does it really make a difference.
> Tom   SC
>
>
>
>
> ________________________________
> From: Gale Gorman
> <gale_gorman at mac.com>
> To: Tom Cooper <cooptnt at att.net>
> Cc: Oletrucks
> <oletrucks at autox.team.net>
> Sent: Mon, April 19, 2010 8:47:31 AM
> Subject: Re:
> [Oletrucks] dextron vs mercon
>
> Any good reason not to just use Dextron?
> --
> Gale Gorman
> Houston
>
> On Apr 19, 2010, at 5:21 AM, Tom Cooper wrote:
>
> I
> developed a leak in my old 350 tranny. I know there is fluid for F@*#'s
> and
> fluid for Chevy's, but I am wondering what is the difference? Would
> actually
> tear anything up if a quart of Mercon got put into a Chevy tranny
> or vice
> versa? I also saw some "multi vehicle" tranny fluid on the shelve
> that is
> suppose to work in either transmission. Just curious how much it
> does matter
> and whats in the "multi vehicle" that makes it work in either.
> Just curious..
>                             Have a great week.
>
>
>               Tom in SC
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