Recent Topics
Job contract question
by Lolvoguy
08/18/18 12:50 AM
Need advise/input on tires
by Lolvoguy
08/18/18 12:24 AM
2003 GMC Sierra rear differential oil
by Carbon12
08/18/18 12:00 AM
Bilstein dealers in Canada??
by BrianF
08/17/18 11:59 PM
Idemitsu ATF TLS-LV vs. Toyota WS ATF for a Lexus GS350
by JeffKeryk
08/17/18 11:23 PM
2007 BMW X5 (4.8), EDGE 0W-40, 5k OCI, 108k
by 1JZ_E46
08/17/18 10:52 PM
Outdoor vs. Indoor Shooting range
by FirstNissan
08/17/18 09:36 PM
Oil for 2018 Civic 1.5 Turbo-any SN+?
by Blue_Goose
08/17/18 08:30 PM
Hellcat driver arrested
by spasm3
08/17/18 08:28 PM
BMW 335xi transfer case fluid
by redhat
08/17/18 08:12 PM
Noack volatility: New test methods
by wemay
08/17/18 08:10 PM
SN+ for Non Turbo?
by Eddie
08/17/18 07:51 PM
New 9 year old OIL FILTER!
by zfasts03
08/17/18 07:28 PM
What Would You Do?
by NYEngineer
08/17/18 07:27 PM
Dexos1 Gen2 SN vs Dexos1 Gen 2 SN Plus
by aquariuscsm
08/17/18 07:19 PM
Oil filter pleats
by newbe46
08/17/18 06:40 PM
Separating Tread On All 4 Tires - How?
by Lethal1ty17
08/17/18 06:28 PM
Hydrosilex ceramic coating/spray
by Chris B.
08/17/18 06:12 PM
Tax question regarding selling stock
by dja4260
08/17/18 05:14 PM
KUMHO Crugen HT51
by jrvn
08/17/18 04:36 PM
Newest Members
GJM120, HotFootHank, b_fuss, ostneb, Baxter2
65737 Registered Users
Who's Online
20 registered (Aero540T, dishdude, bbhero, Duffyjr, CharlieBauer, CleverUserName, 1 invisible), 803 Guests and 33 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65737 Members
67 Forums
288897 Topics
4818550 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 3 1 2 3 >
Topic Options
#3590498 - 01/06/15 06:24 PM I'm thinking of doing a super T10 experiment
turtlevette Offline


Registered: 12/24/13
Posts: 3663
Loc: Massachusetts
In my 79 Trans Am. I've got it running decently now. The Borg Warner 4 speed super T10 does not down shift that well. To go down into 1st the car practically has to be just creeping along. I'm guessing the factory gear oil is still in there. I added a bit of Maxlife ATF (12oz out of 40oz capacity) to thin it down and it improved some.

So what kind of fluids should I try in there?

1. I just picked up some Pennzoil synchromesh
2. I have some CVT fluid
3. various ATFs Dex, Merc, Maxlife
4. what engine oils should I try?
5. various additives such as Lucas trans fix

Longevity is not a concern as this is just a toy that will be driven maybe 1-2 k miles per year. So I seriously doubt that anything I put in will mess it up.

Shift quality is the desired result.
_________________________
USA-1

Top
#3590507 - 01/06/15 06:31 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
HerrStig Offline


Registered: 08/24/11
Posts: 9560
Loc: Boston, MA
That transmission was tough to kill but it's something of a sow's ear. A synthetic gear oil in the right viz might help. Try the TA forums, or those for any car which used that gearbox.

Top
#3590517 - 01/06/15 06:41 PM Re: I'm thinking of doing a super T10 experiment [Re: HerrStig]
turtlevette Offline


Registered: 12/24/13
Posts: 3663
Loc: Massachusetts
Originally Posted By: HerrStig
Try the TA forums, or those for any car which used that gearbox.


I have. They all think you're gonna blow it up unless you use old fashioned GL-4 gear oil snot. They think GL-5 will immediately dissolve the brass synchronizer. Lots of voodoo doctors out there.
_________________________
USA-1

Top
#3590537 - 01/06/15 06:58 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
A_Harman Offline


Registered: 10/01/10
Posts: 6972
Loc: Michigan
My Corvette originally came with the 4+3 transmission, which was a super T10 married to a planetary overdrive. I hated the way the base 4-speed box shifted. It was too notchy. I tried Red Line MTL in it, but that didn't seem to help much. The most successful experiment that I did with that trans was to replace it with a 6-speed. Now it shifts a lot better.
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

Top
#3590538 - 01/06/15 06:59 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
2015_PSD Offline


Registered: 09/26/10
Posts: 7476
Loc: SE Texas
Originally Posted By: turtlevette
old fashioned GL-4 gear oil snot.

is what is partly causing the rough shifting (at least until it warms up). I had a 1980 T/A that I installed an SD 455 with a Muncie M-22 and a 12 bolt axle into. I used synthetic M1 75W-90 in it and it was pretty slick without being too notchy. However, none of the manual transmissions from that era were extraordinarily smooth. I had a friend with a 1980 Z-28 that we installed a Doug Nash into and it shifted like something on roller bearings.
_________________________
2018 MB AMG GLC43 3.0L Coupe - Castrol 0W-40/Purflux
2018 MB C300 2.0L - M1 0W-40/OEM
2015 F-250 6.7L PS Diesel - Delo 15W-40/CQ Blue
2014 Explorer 3.5L Limited - M1 AFE 0W-20/FU

Top
#3590719 - 01/06/15 09:04 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7485
Loc: S California
How about Red Line MTL 75W80 GL-4?

I used it in an older Jeep with a 283 engine/T-10 combination with good results. The T-10 lived a hard life and never gave any problems.

Top
#3591765 - 01/07/15 06:11 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
Greasymechtech Offline


Registered: 07/11/14
Posts: 1544
Loc: Paradise of Florida
http://www.richmondgear.com/pdf/MANTRFLUID.pdf

Ford Redline Amsoil... have great GL4 75w90 manual transmission fluids.

Nissan Hyundai Redline GM Mopar have 75w85 GL4 MT fluids that should improve shifting in Mass cooler weather without worry of decreased protection from thinner synchromesh fluids.
_________________________
At what point should a lurker start posting :-)

Top
#3592804 - 01/08/15 01:23 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
MolaKule Offline


Registered: 06/05/02
Posts: 19161
Loc: Iowegia - USA
Originally Posted By: turtlevette
In my 79 Trans Am. I've got it running decently now. The Borg Warner 4 speed super T10 does not down shift that well. To go down into 1st the car practically has to be just creeping along. I'm guessing the factory gear oil is still in there. I added a bit of Maxlife ATF (12oz out of 40oz capacity) to thin it down and it improved some.

So what kind of fluids should I try in there?

1. I just picked up some Pennzoil synchromesh
2. I have some CVT fluid
3. various ATFs Dex, Merc, Maxlife
4. what engine oils should I try?
5. various additives such as Lucas trans fix

Longevity is not a concern as this is just a toy that will be driven maybe 1-2 k miles per year. So I seriously doubt that anything I put in will mess it up.

Shift quality is the desired result.



I would not use any of the fluids in your list. Pennzoil Synchromesh is too thin as are the ATF fluids.

I would recommend the Redline 75W85 which is a 12.0 cSt viscosity dedicated MTL with a GL-4 protection rating.

The original T-10 speced a 75W90 mineral oil but shifting in cold weather really sucks with that viscosity.


Edited by MolaKule (01/08/15 01:25 PM)

Top
#3592865 - 01/08/15 02:17 PM Re: I'm thinking of doing a super T10 experiment [Re: MolaKule]
turtlevette Offline


Registered: 12/24/13
Posts: 3663
Loc: Massachusetts
Originally Posted By: MolaKule
I would not use any of the fluids in your list. Pennzoil Synchromesh is too thin as are the ATF fluids.

I would recommend the Redline 75W85 which is a 12.0 cSt viscosity dedicated MTL with a GL-4 protection rating.

The original T-10 speced a 75W90 mineral oil but shifting in cold weather really sucks with that viscosity.


If I don't try something thin, and/or something off the wall, it's not an experiment.

I suspect these heavy oils impede aggressive downshifts even when warm, so I do want to do something a bit out of the box.

I doubt this trans will ever get warm unless I drive it all the way down the cape on the highway, so maybe a thin fluid would provide acceptable wear in a low mileage situation.

Can you look at my CVT fluid question further down the page? I may not do as you say but that doesn't mean I don't appreciate the advise and reasoning.

Top
#3593098 - 01/08/15 06:47 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
MolaKule Offline


Registered: 06/05/02
Posts: 19161
Loc: Iowegia - USA
smile

The CVT fluid is just a specialized ATF.

None of the those thin ATF type fluids will provide the friction modification required for synchronized trannys, whereas the dedicated MTL's will.

If you want some dedicated MTLs that are thinner, and wear is not an issue, then try either the Valvoline MTF Part Number [email protected] cSt, or the Pennzoil [email protected] cSt. These will provide smoother gear transitions if shifting is the only thing that is important.

Top
#3593197 - 01/08/15 08:46 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18450
Loc: Dallas,Tx USA
The T-5's in the Nissan Z31's specd both atf and gear oil for their manual transmissions. I wonder why?

_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Quaker State Ultimate Durability 5W30


Top
#3593262 - 01/08/15 09:51 PM Re: I'm thinking of doing a super T10 experiment [Re: aquariuscsm]
MolaKule Offline


Registered: 06/05/02
Posts: 19161
Loc: Iowegia - USA
Originally Posted By: aquariuscsm
The T-5's in the Nissan Z31's specd both atf and gear oil for their manual transmissions. I wonder why?



I interpret that as saying - Lubes for the following:

Transmission except for Turbo Model - API GL-4 dedicated MTL,

Transmission for Turbo Model - API GL-4 dedicated MTL for the model with an MT, and Dexron for the model with an AT,

Differential - API GL-5 for the hypoid diffy.

Top
#3598194 - 01/12/15 11:12 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
dailydriver Offline


Registered: 03/14/06
Posts: 9176
Loc: Pennsylbammyvania
Yes, if you have to "experiment" with one of the fluids you've listed, I would go with the Pennzoil Synchromesh, even though it is not a full synthetic GL-4. wink
_________________________
2016 Ford Fiesta ST
Ravenol REP 5W-30
Amsoil Ea15K51 filter
Motul Gear 300 non-LS 75W-90

Top
#3598986 - 01/13/15 05:05 PM Re: I'm thinking of doing a super T10 experiment [Re: turtlevette]
46Harry Offline


Registered: 01/08/12
Posts: 414
Loc: hawthorne, Ca.
I've been using Amsoil 75W-90 manual transmission and transaxle fluid in the early T10 in my Studebaker Hawk with good results. I've tried straight 90 GL 1 gear oil, synthetic GL5 75W-90 and Redline MTL in the transmission and it shifts the smoothest with the Amsoil in the case.

Top
#3599007 - 01/13/15 05:27 PM Re: I'm thinking of doing a super T10 experiment [Re: 46Harry]
turtlevette Offline


Registered: 12/24/13
Posts: 3663
Loc: Massachusetts
Originally Posted By: 46Harry
I've been using Amsoil 75W-90 manual transmission and transaxle fluid in the early T10 in my Studebaker Hawk with good results. I've tried straight 90 GL 1 gear oil, synthetic GL5 75W-90 and Redline MTL in the transmission and it shifts the smoothest with the Amsoil in the case.


Thank you. That helps me narrow down some of the things i'll try.
_________________________
USA-1

Top
Page 1 of 3 1 2 3 >