transmission fluid...

90mustangfan

New Member

Oct 18, 2005

93

0

0

So cal

Oct 29, 2005

#1

• Oct 29, 2005

• #1

I have a stock T-5 trans in my stang...It grinds inbetween shifts when the trans is cold....when it warms up it stops grinding, Im going to change the fluid, what fluid should I put in, and is there anything else I can put in to help with the grinding....I know the snycros are going but is there anything kind of fluid that will help it...Somone told me to put a teflon type of fluid, and that will help with the syncros and stuff...Is that true...

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,177

17,879

224

Massachusetts

Oct 29, 2005

#2

• Oct 29, 2005

• #2

ATF Dex 3

Replace the synchros soon before the grinding starts to damage the dog teeth on the gears. It will just make it more expensive.

 

jackchan

New Member

Oct 17, 2004

507

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Mobile Alabama

Oct 29, 2005

#3

• Oct 29, 2005

• #3

ATF Dex 3

Replace the synchros soon before the grinding starts to damage the dog teeth on the gears. It will just make it more expensive.

Click to expand...

ditto!

 

gt40_2003wes

I did sound a wee bit gay there.

Aug 14, 2005

461

2

48

ky

Oct 29, 2005

#4

• Oct 29, 2005

• #4

mine does the same thing buit i think i just need a rebuild.

 

maverick0716

Founding Member

Jan 12, 2002

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Chilliwack, BC, Canada

Oct 29, 2005

#5

• Oct 29, 2005

• #5

ATF. You can put synthetic in if you like...that's what I run. Don't listen to anyone who says to use gear oil or motor oil....some transmissions require those, but not T-5's.

 

D

Duro5341

Member

Sep 24, 2005

86

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7

Oct 29, 2005

#6

• Oct 29, 2005

• #6

^^^^^agreed.........

Either Dex III, synchromesh...........oil, and gear oil will kill your T-5

Duro

 

srothfuss

Last night I stabbed the same guy 7 times in a row

Oct 17, 2004

1,796

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Woodward Ave.

Oct 29, 2005

#7

• Oct 29, 2005

• #7

maverick0716 said:

ATF. You can put synthetic in if you like...that's what I run. Don't listen to anyone who says to use gear oil or motor oil....some transmissions require those, but not T-5's.

Click to expand...

That is what I was going to say! :Word:

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Oct 29, 2005

#8

• Oct 29, 2005

• #8

Some T5's do require gear oil, just not the one in an '89.

SInce it happens when cold, I would take Mav's advice and try some synthetic (not as a fix, but till you can get inside the box). It might help since it flows better cold, or it might make it shift worse. Hard to say. Worth a try IMHO.

Good luck.