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Unread 06-20-2007   #1 (permalink)
ianb is offline Apprentice

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Default Recommended transmission fluid for T-5?

i was wondering if anyone has tried anything to maybe smooth out the shifts in the 5 speeds? anyone have luck?
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Unread 06-20-2007   #2 (permalink)
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Thumbs up T5 Fluid

Dexron III Works well I have used it with Lucas Additive, But I always perfer off the shelf Mobil 1
Or your clutch maybe worn or Transmission Synchros are worn, Otherwise that is the rec. Fluid

Last edited by DerekM347; 06-20-2007 at 11:33 PM. Reason: forgot to add
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Unread 06-20-2007   #3 (permalink)
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I use the Royal Purple MAX ATF which is for all transmissions
recommending Ford Mercon or GM Dexron III, which is the recommended tranmission fluid for T-5's.
It's makes the shifting really smooth.
Link
http://www.synerlec.com/prodsa/matfa.html
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Unread 06-20-2007   #4 (permalink)
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I have heard of guys swapping out the ATF for regular gear oil. I never heard how it worked out long term though, and I never had the guts to try it myself. I stick with the MOBIL1!
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Unread 06-20-2007   #5 (permalink)
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Quote:
Originally Posted by DerekM347 View Post
Dexron III Works well I have used it with Lucas Additive, But I always perfer off the shelf Mobil 1
Or your clutch maybe worn or Transmission Synchros are worn, Otherwise that is the rec. Fluid
im not doubting my synchos might be a bit worn..the clutch grabs low so i doubt thats a issue..also it could be that i havent gotten used to the feel of a mustang. i think im gonna try mobil or royal purple for the time being thou its 2.8 qts right ?
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Unread 06-21-2007   #6 (permalink)
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Quote:
Originally Posted by Nyt_Muves View Post
I have heard of guys swapping out the ATF for regular gear oil. I never heard how it worked out long term though, and I never had the guts to try it myself. I stick with the MOBIL1!
I would guess they would be lucky to make it a few hundred miles before burning up the needle bearings using regular gear oil!
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Unread 06-21-2007   #7 (permalink)
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Quote:
Originally Posted by ianb View Post
im not doubting my synchos might be a bit worn..the clutch grabs low so i doubt thats a issue..also it could be that i havent gotten used to the feel of a mustang. i think im gonna try mobil or royal purple for the time being thou its 2.8 qts right ?
I like to buy the Ford Brand myself, the Spec lists 2.8 Quarts, but I always get about 2.5 or 2.6 before it starts overflowing.
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Unread 06-21-2007   #8 (permalink)
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Quote:
Originally Posted by 93mustang View Post
I use the Royal Purple MAX ATF which is for all transmissions
recommending Ford Mercon or GM Dexron III, which is the recommended tranmission fluid for T-5's.
It's makes the shifting really smooth.
Link
http://www.synerlec.com/prodsa/matfa.html

I agree i run the same royal purple in my g-force t-5 and love it....i tryed the gear oil in my stock T-5 and when it was cold shifting was hard....and shortly after i switched to gear oil my tranny went...i would stick with factory recommendations (using Dextron III) or switching to royal purple max atf.....but i WOULDN"T go to gear oil or anything that thick~!
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Unread 06-21-2007   #9 (permalink)
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I am running the b&m trick shift full synthetic with no issues but then again I have a fresh rebuilt trans 150 mi or so on it. Has anyone else used this any horror stories or what not. Its one of those all in ATF and says it can be used in a manual
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Unread 06-21-2007   #10 (permalink)
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Early model non-world class T-5's used 70 weight gear oil.
Later model world class T-5's use Dexron III.
What year is your car?
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Unread 06-21-2007   #11 (permalink)
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I have acctually heard that the stuff Chev puts in there 89 z24s is suposed to work real good but its like 10$ a liter.
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Unread 06-21-2007   #12 (permalink)
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my car is a 89lx..its quite hard to get into gear but the clutch grabs low towards the floor. sound like synchros maybe ?

that stuff your speaking rs89gt is it called GM SYNCROMESH ??
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Unread 06-22-2007   #13 (permalink)
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Quote:
Originally Posted by ianb View Post
my car is a 89lx..its quite hard to get into gear but the clutch grabs low towards the floor. sound like synchros maybe ?

that stuff your speaking rs89gt is it called GM SYNCROMESH ??
Is that stuff really $10 a litre? Is it really worth $10 a litre?
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Unread 06-22-2007   #14 (permalink)
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Is your clutch cable ok. I just replaced mine and it shifts alot better now. Could not tell how bad the old cable was streched but the sheathing(black part around the old cable) was coming apart from where the cable goes into the tranny and it would only be a matter of time before the cable was destroyed because the cable was exposed to the weather. I used a factory replacement cable because the first one lasted for 139,000 miles.
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Unread 06-22-2007   #15 (permalink)
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Yup thats it syncromesh. & yes I used to have a Z24 & it went for around 10$.
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