Re: [Chrysler300] Your Car's Tranny Fluids - Synthetic Type F?
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Re: [Chrysler300] Your Car's Tranny Fluids - Synthetic Type F?



Ray,

At FCA (as it is now known), our transmission design group doesn't recommend synthetic trans fluid in older units because testing showed seal wear.  With the ATF+5 fluids used in the last version Chrysler transmissions, several seals had to be changed to Viton to hold up to the high detergency fluid.  My recommendation is, use Type F, mineral base, and call it a day.  Synthetic is great for transmissions where the seal materials have been upgraded and the higher temps require it.  

John Begian
--------------------------------------------
On Mon, 5/16/16, Ray Melton rfmelton@xxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

 Subject: [Chrysler300] Your Car's Tranny Fluids - Synthetic Type F?
 To: "kboonstra@xxxxxxxxxxxx" <kboonstra@xxxxxxxxxxxx>, "chrysler300@xxxxxxxxxxxxxxx" <chrysler300@xxxxxxxxxxxxxxx>
 Date: Monday, May 16, 2016, 3:35 PM
 
 
  
 
 
 
   
 
 
     
       
       
       
 
 
 
 
 
  Hello Keith - 
  
 We are ready to install the
 rebuilt cast-iron Torqueflite in my late father's 1957
 Chrysler 300C.  I have purchased (but not yet added) some
 Valvoline Premium Type F fluid (standard petroleum base). 
 Although my usage will actually be very gentle and not
 require a high-performance fluid, I would definitely
 consider a synthetic fluid IF I could be pretty sure of two
 things:  First, unless specifically modified, early
 versions of synthetic fluids (engine oil, transmission
 fluids, etc.,) often did not contain adequate seal-swelling
 agents, so they tended to leak, often prodigiously.  Question:  Do you or any of
 your acquaintances have personal experience with any brand
 of synthetic Type F fluid, and have their results been
 leak-free for at least a year?     Second:  Both Royal
 Purple and Redline offer their synthetic Type F fluids
 "For Racing Purposes Only"  -- RP even says it
 is NOT for standard automatic transmissions.  Redline
 makes a similar admonition, just not quite so specific, so I
 am loathe to use either of those well-respected names in an
 application they advise against.   Redline says their
 fluid has NO friction modifiers in it, whereas I thought
 "Type F" implied a certain "package" of
 friction modifiers, so I don't know what to make of
 their statements.  The Redline advisors say they have no
 advice to offer regarding my proposed use, and hence would
 not recommend their product without specific experience. 
 However, ALL the synthetic manufacturers talk about greatly
 improved wear characteristics, extended service life,
 etc.   
  
 I see that ATI
 (makers of some extreme high-performance transmissions and
 torque converters, etc.) offers a full-synthetic Type F
 fluid (available through Summit, JEGS, Amazon, etc.)  They
 say it is for "Racing, street rod and high-performance
 applications".   Their tech rep could only say that
 they developed the fluid for Joe Gibbs Racing, and
 they've had excellent results in dragsters and Funny
 Cars, with no reports of undue leakage or other performance
 or compatibility issues.   I would like to give that stuff
 a try, especially if anyone in the Club has favorable
 experience with it.  Or alternatively, I would like to hear
 any reports of unfavorable experience with ANY of the
 full-synthetic Type F fluids.  It's not prohibitively
 expensive, either, at $98 + shipping for 12 quarts from
 Amazon. If I
 don't hear any adverse comments, I may just go ahead and
 be the first "guinea pig"! Ray MeltonLas Cruces, NM1957 300C
 convertible  (almost ready to roll, again!)
 To:
 finsruskw@xxxxxxxxxxxxxxx
 CC:
 agmoon@xxxxxxxxx; chrysler300@xxxxxxxxxxxxxxx
 From: Chrysler300-noreply@xxxxxxxxxxxxxxx
 Date: Sun, 15 May 2016 14:06:59 -0400
 Subject: Re: [Chrysler300] You Cars Tranny
 Fluids
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
   
 
 
     
       
       
       A few years ago there was a pretty
 lengthy thread on our forum about which ATFs were both
 suitable and available for our Torqueflites. The original
 ATF in the cast iron Torqueflite was Type A, but that is no
 longer being made and offered on the market. I has been
 conclusively agreed that Type F works very well as a
 substitute for Type A, and furthermore that most other ATFs,
 like Dexron and Mercon, will induce disappointing (and
 sometimes strange) performance characteristics.
 ATF is the fluid with the very most
 critical specifications of any in your car. Getting it wrong
 can mess up the transmission functions, and even wear it out
 prematurely. So yes, Go with only Type F in your
 Torqueflite. 
 And
 your question about synthetic vs. petroleum base? You're
 probably not going to stress your ATF by racing or pulling a
 trailer anymore, but it is true that synthetic is superior
 to petroleum-based in many performance characteristics, and
 inferior in none. So you'll probably be fine using
 standard Type F, and you'd be finer yet using Redline
  or Royal Purple synthetic Type F. 
 Keith Boonstra
 On Sun, May 15, 2016 at
 12:16 PM, 'David Schwandt' finsruskw@xxxxxxxxxxxxxxx
 [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx>
 wrote:
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
   
 
 
     
       
       
       I have no trouble finding type F at WalMart
 
 
 
 So, why mix them at all?
 
 
 
 While I had the drivetrain out a couple years ago, I changed
 the oil in the
 
 trans and the T/C and went with type F
 
 
 
 Noticed better shifting right away.
 
 
 
 From: Chrysler300@xxxxxxxxxxxxxxx
 [mailto:Chrysler300@xxxxxxxxxxxxxxx]
 On
 
 Behalf Of 'Allan' agmoon@xxxxxxxxx
 [Chrysler300]
 
 Sent: Sunday, May 15, 2016 11:12 AM
 
 To: 300 Club Listserver
 
 Subject: [Chrysler300] You Cars Tranny Fluids
 
 
 
 Hi all,
 
 
 
 Don't know if this thread has already been done or not
 don't see anything
 
 so...  If these answers are there we apologize, please send
 us the archived
 
 location(s).  Thanks.
 
 
 
 1.  Is it correct that type F and Dextron are pretty much
 the same tranny
 
 fluid except the Type F has a slightly higher friction
 coefficient?  There
 
 is no problem with mixing them?
 
 
 
 2.  We can use any of todays tranny fluids that replace
 dextron and or
 
 Mercon where either was called for in the original owners
 manual.?  We
 
 happen to have an F with cast iron torqueflite.
 
 
 
 3.  But what about synthetics vs. Dino tranny fluids? 
 Should one use 100%
 
 synthetics?  Can you mix them with Dino. oil too?
 
 
 
 4.  Also today's tranny fluids, for example Valvoline
 Dex/Merc lists use in
 
 certain Fords, GM and foreign cars but doesn't list
 Chrysler as a use for it
 
 but they mean the newer Chryslers right?  
 
 
 
 Have a few old quarts of leftover type F from somewhere and
 will use them
 
 over time to keep topping off the F's tranny if I can
 use them for this.
 
 
 
 Thanks in advance for any responses.  We appreciate your
 time and thoughts.
 
 
 
 A&G
 
 
 
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------------------------------------
Posted by: john begian <r2gthawk@xxxxxxxxx>
------------------------------------

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