[Shotimes] Redline D4 best fluid of choice for an MTX-IV with "paper" synchros

[Carl Prochilo]

Ah, my bad.  You are saying that Dexron III is an ATF fluid, which is what
Ford would use if servicing an MTX-IV.  BTW, the service manual for an 89
SHO says to use Dexron II.
Based on what I read here, GM Synchromesh, Mobil One ATF and Redline D4
are all superior ATF fluids over the Ford Dexron III.

Cheers,
Carl Prochilo
92 Ultra Red Crimson

> Yes, ford uses and recommends ATF from the factory.
>
> My only complaint about that was the cold weather
> performance of typical ATF.  Very stiff in cold weather and
> for several miles till the tranny warmed up.
>
> Switching to Redline MTL in my '89 solved the problem.
>
> Went with D4 with the new Quaife and fiber syncros, because
> Mike Courtney recommended the thinner fluid for better
> splash and gravity fed lubrication inside the tranny.  It
> worked well with MTL, but we changed it out after a while to
> the D4, no real difference in how the unit shifted between
> the two fluids.
>
> Don Mallinson
>
> Ron Porter wrote:
>> I believe that Ford was using ATF in the MTXs, but I don't recall seeing
>> anything about what they really used. Whatever, the cars seemed to shift
>> OK
>> from the factory.
>>
>> Ron Porter
>>
>> -----Original Message-----
>> From: Carl Prochilo [mailto:gr8sho@prochilo.myserver.org]
>> Sent: Tuesday, August 12, 2003 11:49 AM
>> To: Ron Porter
>> Cc: 'SHOTIMES'
>> Subject: RE: [Shotimes] Redline D4 best fluid of choice for an MTX-IV
>> with
>> "paper" synchros
>>
>>
>> What I got out of this is the way BMW approached selection of
>> transmission
>> fluid for their cars.  One point being that from the factory they use an
>> ATF fluid.  Ford could have done the same for our cars when the synchro
>> design change was made but didn't.
>> Anyone know if the 5-speed Getrag in the Lincoln LS uses ATF fluid?
>> Just
>> curious.
>>
>> Cheers,
>> Carl Prochilo
>> 92 Ultra Red Crimson
>>
>>
>>>Looks like a pretty basic site for 325i maintenance. I did send them an
>>>email with our procedure for flushing the power steering systems,
>>> though.
>>>
>>>Ron Porter
>>>
>>>-----Original Message-----
>>>From: shotimes-admin@autox.team.net
>>> [mailto:shotimes-admin@autox.team.net]
>>>On Behalf Of Carl Prochilo
>>>Sent: Monday, August 11, 2003 12:22 PM
>>>To: Donald Mallinson
>>>Cc: 'SHOTIMES'
>>>Subject: Re: [Shotimes] Redline D4 best fluid of choice for an MTX-IV
>>> with
>>>"paper" synchros
>>>
>>>
>>>For grins, I used Google searching for "Redline fluid".
>>>
>>>This was the first hit in the list.
>>>
>>>http://www.bmw325i.net/rev_redline_tran_fluid.shtml
>>>
>>>Cheers,
>>>Carl Prochilo
>>>92 Ultra Red Crimson
>>>
>>>
>>>>When Mike Courtney put in my Quaife and the new fiber style
>>>>syncro's, he told me that D4 was better for ONE reason:
>>>>
>>>>It was thinner and would splash around and flow better
>>>>through the main shafts and lubricate things better.
>>>>
>>>>It has nothing really to do with the type of syncro.
>>>>
>>>>Don Mallinson
>>>>
>>>>Carl Prochilo wrote:
>>>>
>>>>>Ok, I'll bite, what are the characteristics of D4 in a newer MTX-IV.
>>>>>In
>>>>>other words, what would the driver notice?  Faster operation of the
>>>>>gearbox?  If the car normally sits in warm to hot weather, will the D4
>>>>>make any noticeable improvement?
>>>>>
>>>>>Carl Prochilo
>>>>>92 Ultra Red Crimson
>>>>>
>>>>>
>>>>>
>>>>>>Upon the discovery of the composite synchros and the
>>>>>>new ATF fluid requirement, it seems that D4 is what works with the
>>>>>>newer
>>>>>>boxes, or an older box that has been rebuilt with the newer parts.
>>>>>
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