What fluid should I be using in a 89 Pontiac trans am T5?
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Joined: May 2005
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From: PA
Car: 88 Mazda RX7
Engine: 305- Headers, -680cfm Quadrajet,-flex-a-lite dual fans
Transmission: t5
What fluid should I be using in a 89 Pontiac trans am T5?
I have always though that it should be a gear oil. GL-3.
Then I just heard that some T-5's should be using ATF. Whats up with that?
Also, do you guys have any tips about jiggling the T5 into the bell housing? It doesn't seem to want to line up even with the tool.
Thanks guys!
Then I just heard that some T-5's should be using ATF. Whats up with that?
Also, do you guys have any tips about jiggling the T5 into the bell housing? It doesn't seem to want to line up even with the tool.
Thanks guys!
Last edited by rx7 punk; Dec 5, 2007 at 08:26 AM.
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Re: What fluid should I be using in a 89 Pontiac trans am T5?
Should be ATF in that trans model (2nd design T-5).
Not sure "what's up"? That's just the way it is.
Not sure "what's up"? That's just the way it is.
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From: princeton,west virginia
Car: 89 trans am GTA,90 model trans am 350 tuneport,87 firebird
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Transmission: 5 speed,auto 700r4
Re: What fluid should I be using in a 89 Pontiac trans am T5?
ATF in the 1989 T5
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
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Re: What fluid should I be using in a 89 Pontiac trans am T5?
Thread Starter
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From: PA
Car: 88 Mazda RX7
Engine: 305- Headers, -680cfm Quadrajet,-flex-a-lite dual fans
Transmission: t5
Re: What fluid should I be using in a 89 Pontiac trans am T5?
What ATF are we talking?
+4, Mecron/Dexron 2, 3, or 5?
EDIT: Nevermind, found it Dextron II
Thanks guys!
+4, Mecron/Dexron 2, 3, or 5?
EDIT: Nevermind, found it Dextron II
Thanks guys!
Joined: Sep 2005
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Re: What fluid should I be using in a 89 Pontiac trans am T5?
What ATF are we talking?
Dex 2 is obsolete. Hasn't been made in years. You can't buy it any more AFAIK. At least, I haven't seen any on shelves for about 10 years or something.
Any kind is fine.
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From: PA
Car: 88 Mazda RX7
Engine: 305- Headers, -680cfm Quadrajet,-flex-a-lite dual fans
Transmission: t5
Re: What fluid should I be using in a 89 Pontiac trans am T5?
But wait, isn't this saying I need Dex II? Im lost.
Sorry for resurrecting this post, but the advice given is somewhat innaccurate and may cause somebody's T-5 damage.
The '83 to '87 Camaros had the NWC-T5 (NonWorld Class T-5) or sometimes referred to as the STD-T5 (Standard T-5) transmission. This tranny's blocking rings used brass (some say bronze) synchronizers.
This tranny did use 70W gear oil.
The '88 to '92 Camaros had the WC-T5 (World Class T-5) transmission. This tranny's blocking rings use fiber synchronizers. These required the use of ATF fluid (Dextron II) as gear oil could cause them damage.
Z28er had an '84, and if the tranny is original (NWC-T5), it would have taken 70W gear oil, not ATF.
The '83 to '87 Camaros had the NWC-T5 (NonWorld Class T-5) or sometimes referred to as the STD-T5 (Standard T-5) transmission. This tranny's blocking rings used brass (some say bronze) synchronizers.
This tranny did use 70W gear oil.
The '88 to '92 Camaros had the WC-T5 (World Class T-5) transmission. This tranny's blocking rings use fiber synchronizers. These required the use of ATF fluid (Dextron II) as gear oil could cause them damage.
Z28er had an '84, and if the tranny is original (NWC-T5), it would have taken 70W gear oil, not ATF.
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Re: What fluid should I be using in a 89 Pontiac trans am T5?
So, somebody that doesn't really know what they're talking about, posts something somewhat inaccurate on the Internet (I know, I know, you can't post things on the Internet if they're not true, right?), maybe a long time ago.
Will that cause the oil companies to go back and begin producing a fluid that's been superseded for a decade or more now?

I'm guessing ..... probably not.
Use what you can get. It doesn't matter. Better than running it dry.
Will that cause the oil companies to go back and begin producing a fluid that's been superseded for a decade or more now?

I'm guessing ..... probably not.
Use what you can get. It doesn't matter. Better than running it dry.
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From: Manchester, CT + Nashua, NH
Car: 90 Firebird Formula
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Re: What fluid should I be using in a 89 Pontiac trans am T5?
dexIII is backwards compatible IIRC
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From: PA
Car: 88 Mazda RX7
Engine: 305- Headers, -680cfm Quadrajet,-flex-a-lite dual fans
Transmission: t5
Re: What fluid should I be using in a 89 Pontiac trans am T5?
ok cool, so any ATF will work.
Thanks Guys!
I can finally drop this 350/T5 into my Mazda lol
Thanks Guys!
I can finally drop this 350/T5 into my Mazda lol
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From: North Central Mass.
Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Re: What fluid should I be using in a 89 Pontiac trans am T5?
Good luck, that is going to haul!
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