[E-Type] SIII ATF oil recommendation

What is the recommended ATF oil to use when you have to
replace about one gallon of the ATF oil in the automatic
transmission ? I drained the oil, but must believe that the
remaining of the 9 liters must be in the converter. I have
no idea what’s in there in terms of brand or if it is
mineral or synthetic. Can I just refill/top up with the
best synthetic oil available ?

Thank you in advance … Ole–
Ole-XKE1974
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In reply to a message from Ole-XKE1974 sent Thu 21 Jul 2011:

The fluid needs to be ‘‘Type F’’, not the more modern Dextron/Mercon.
The difference in the fluids is the coefficent of friction. The
Ford type has a better grab. If you transmission tends to slip,
putting in a different fluid will cause it to slip even more. There
is a mod where you put Ford Type in a GM400 to make it shift
firmer. Synthetic fluid will work if it meets this spec.–
The original message included these comments:

What is the recommended ATF oil to use when you have to
replace about one gallon of the ATF oil in the automatic
transmission ? I drained the oil, but must believe that the
remaining of the 9 liters must be in the converter. I have
no idea what’s in there in terms of brand or if it is
mineral or synthetic. Can I just refill/top up with the
best synthetic oil available ?


Dick Maury , Rebuild Dept.- Coventry West, JCNA President
Lithonia, GA, United States
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In reply to a message from Dick Maury sent Thu 21 Jul 2011:

Hi Dick,

thanks for the answer.
I looked at the Mobil website, where they state that their
synthetic oils mix with mineral types, but they didn’t have
that last detail that you provided. Thanks !

… Ole–
Ole-XKE1974
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In reply to a message from Ole-XKE1974 sent Thu 21 Jul 2011:

I have not looked so I am not sure anybody offers synthetic in Ford
spec fluid. Kind of specialized at this point.–
The original message included these comments:

I looked at the Mobil website, where they state that their
synthetic oils mix with mineral types, but they didn’t have
that last detail that you provided. Thanks !


Dick Maury , Rebuild Dept.- Coventry West, JCNA President
Lithonia, GA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–


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In reply to a message from Ole-XKE1974 sent Thu 21 Jul 2011:

Ole,

The S3 maintenance guide also suggests ‘‘Type F’’ for the power
steering system.

I’d just pour the Type F down there and be done with it…The Borg
Warner M12 is an old slush box and I’d hate to see you spend extra
time and cash searching for a synthetic that won’t do anything
better than the Type F does. I’ve used Dextron in an old XJ-S with
the BW and it felt like a sledgehammer was doing the shifting in
that box.–
Matt 1973 OTS
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