Re: [Chrysler300] Torky fluid preference???
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Re: [Chrysler300] Torky fluid preference???





The 727 and the cast iron TF have nothing in common. I still recommend type F if it is available, but Dexron III or Mercon is OK too. I use it in my cars because it is cheaper and easier to fine. I have had no issues with it. I don’t know why anyone would recommend ATF-4 in an old trans. It is for later computer controlled transmissions, and is probably not compatible with the clutch and band material in the old units. The Hot Rod article also had some blatant errors to a trans guy. It was all about hot rodding a 727, most of which is not needed on a street car. 
Don
 
Sent: Wednesday, August 30, 2017 7:34 PM
Subject: Re: [Chrysler300] Torky fluid preference???
 
 

Since the HotRod article specifically addresses the 727 transmission, I'm not sure their fluid recommendation would apply to the earlier 488 cast-iron TorqueFlite in my 1957 300.   My transmission was rebuilt by 300 Club TorqueFlite Guru Don Verity, who recommended Type F for that transmission, and  I'm sure he was aware of the ATF+4 fluid when he rebuilt it a couple of years ago.   There was also a thread regarding the thermal stability superiority of the new synthetic fluids, but raising the possible incompatibility with old-formulation seals, leading to leakage, so I was reluctant to experiment!  The Type F seems to be working OK now, although it puked at  least a quart out the dipstick tube after driving only 20 miles (initial overfill?) but has settled down after that.  I barely have 200 miles on it yet. 

 

Ray Melton    Las Cruces, NM    1957 300C convertible      s/n 3N572517


On 8/30/2017 6:08 AM, RICK AND DEBBIE CLAPHAM wrote:

I do agree with the Hot Rod article...I have used the Mopar ATF+4 for years almost two decades , also our local go to, Ford transmission builder uses +4. We both agreed the reason we use it is.. We never want to have come back repairs. so far we both have done well utilizing this fluid.




From: Chrysler300@xxxxxxxxxxxxxxx mailto:Chrysler300@xxxxxxxxxxxxxxx on behalf of 'Rich Barber' c300@xxxxxxx [Chrysler300] mailto:Chrysler300-noreply@xxxxxxxxxxxxxxx
Sent: Tuesday, August 29, 2017 10:05 PM
To: 'William Huff'; 'Ray Melton'; 'Dan Akol'; 'Joe Williams'
Cc: 'Chrysler 300 List'
Subject: RE: [Chrysler300] Torky fluid preference???
 
 

It took some scrolling through a lot of great tips for improving the 727
that sounded reasonable, but the ATF recommendation is "Ron is also a
believer in synthetic automatic transmission fluid and says the old standard
Type-F is outmoded today because it breaks down and foams more readily. A
less expensive alternate is Chrysler ATF+4 fluid, which is a semi-synthetic
blend.ATF +4"

Rich Barber
Brentwood, CA

-----Original Message-----
From: William Huff [mailto:czbill@xxxxxxxxxx]
Sent: Tuesday, August 29, 2017 8:41 PM
To: Ray Melton mailto:rfmelton@xxxxxxx; Rich Barber mailto:c300@xxxxxxx; 'Dan Akol'
mailto:danakolaia@xxxxxxxxx; 'Joe Williams' mailto:jfwilliams2007@xxxxxxxxx
Cc: 'Chrysler 300 List' mailto:chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] Torky fluid preference???

Interesting article on Torqueflite mods as well as a recommendation for
fluid to be used.

http://www.hotrod.com/articles/15-tips-improve-727-torqueflite-trans/

Bill Huff

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