Recent Topics
carfax or other vin websites?
by 01_celica_gt
12/18/14 12:46 AM
Hardest I've laughed in awhile.
by Kuato
12/18/14 12:10 AM
OBESE Driver - Cause Driver Side TIRE WEAR?
by SumpChump
12/17/14 10:34 PM
Mixing: VIIs, PPDs, Waxes
by GMorg
12/17/14 08:31 PM
Found a USA made tool at AutoZone
by Merkava_4
12/17/14 08:23 PM
Found beater car....can't decide whether to buy
by Alltherage
12/17/14 07:03 PM
Anyone try "THE BEST Leather Restorer & Protector"
by Errtt
12/17/14 06:58 PM
Parking brake shoes
by ARB1977
12/17/14 06:54 PM
1997 Ford Explorer 4.0 sohc Castrol Edge 0w40
by jfug97
12/17/14 06:20 PM
2008 Trailblazer SS - second UOA with high Fe
by Fulton 1
12/17/14 05:58 PM
Valvoline Blue 15w40 - 11,410 miles - 2014 RAM HD
by Artem
12/17/14 05:49 PM
AW - Concentration or Total Amount Available?
by Peter_M
12/17/14 05:16 PM
Newest Members
vincejr, Julch, JKane, gg1, kosoku
52205 Registered Users
Who's Online
19 registered (Gillsy, Char Baby, CapriRacer, asiancivicmaniac, iontrap, Ducman, 4 invisible), 517 Guests and 202 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52205 Members
66 Forums
223585 Topics
3544937 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3460847 - 08/20/14 10:43 PM New GM 8 speed transmission to use new Syn fluid
Nate1979 Offline


Registered: 04/08/13
Posts: 728
Loc: Portland, OR
I couldn't find any details about the new fluid except a few of the articles make mention of a new synthetic fluid in the new 8l90 GM transmission:
http://www.offroadxtreme.com/news/detail...-silverado-1500

I wonder if there will be a new Dexron spec?
_________________________
2012 Chevy Silverado 5.3L 4x4 PP 5w-30 w/ Fram Ultra
2010 Subaru Forester 2.5X M1 5w-30 w/ Fram Ultra

Top
#3460917 - 08/21/14 02:47 AM Re: New GM 8 speed transmission to use new Syn fluid [Re: Nate1979]
OneEyeJack Offline


Registered: 09/14/10
Posts: 1771
Loc: California
New spec, new license fee. What's not to like about that for GM? People here that really beat the old 6 speed in off road and trailer towing like Red Line D6 in the transmission and transfer case.
_________________________
84 Honda Civic wagon 5-speed, original owner 425K+ 0w-30
03 Toyota 4Runner V8 2WD, 135K+ 0w-30

Top
#3461031 - 08/21/14 08:02 AM Re: New GM 8 speed transmission to use new Syn fluid [Re: Nate1979]
bigt61 Offline


Registered: 02/12/13
Posts: 1336
Loc: Virginia
Transmission technology is incredible right now. I hope the durability is there.
_________________________
92 Suburban 2500 7.4L 57k M1_5w30 4yr OCI
99 Olds Aurora 4.0L 91K M1_5w30 4yr OCI
94 Bonneville 3.8L 152k VML 5w30 2yr OCI
70 Camaro 5.7L 59k

Top
#3461038 - 08/21/14 08:07 AM Re: New GM 8 speed transmission to use new Syn fluid [Re: Nate1979]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 15403
Loc: Sunny Florida
Yep, and rated for over 750 foot pounds of torque!

Faster shifts than a Porsche DCT.

With the proliferation of torque converter equipped DCT's in Acura, Benz, and others this means the slush box is not dead...
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

Top
#3461092 - 08/21/14 09:26 AM Re: New GM 8 speed transmission to use new Syn fluid [Re: Nate1979]
Greasymechtech Offline


Registered: 07/11/14
Posts: 479
Loc: Paradise of Florida
So, Dexclown-6 wasn't good enough? Waiting on Dexron7!

We'll just have to be happy with synthetic Dexron-6HP.

I just hope that its backwards compatible, as an upgrade to DexronIII and Dexprofit-6.
_________________________
At what point should a lurker start posting :-)

Top
#3461228 - 08/21/14 12:01 PM Re: New GM 8 speed transmission to use new Syn fluid [Re: Nate1979]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 15403
Loc: Sunny Florida
Why the hard feelings? By almost any measure of effectiveness Dex VI is leagues better than previous versions.

Please explain without the hyperbole...
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

Top
#3462270 - 08/22/14 11:33 AM Re: New GM 8 speed transmission to use new Syn fluid [Re: Nate1979]
MolaKule Offline


Registered: 06/05/02
Posts: 14767
Loc: Iowegia
I predict the new full synthetic ATF will have a 100C viscosity spec in the 4.X cSt range, a 40C viscosity of 18-20 cSt, and a Brookfield viscosity of 7,500 cP.


Edited by MolaKule (08/22/14 11:36 AM)
_________________________
"Complaining about a problem without proposing a solution, is called Whining." Teddy Roosevelt smile

Top
#3462596 - 08/22/14 07:13 PM Re: New GM 8 speed transmission to use new Syn fluid [Re: SteveSRT8]
dailydriver Offline


Registered: 03/14/06
Posts: 7210
Loc: Bucks County, Pa.
Originally Posted By: SteveSRT8
Yep, and rated for over 750 foot pounds of torque!

Faster shifts than a Porsche DCT.


Is a variant of this new slushbox what the automatic Z06es are going to get? shrug
_________________________
2000 Z28 1SC 6 speed 175K miles
Red Line 0W-40/Sustina 0W-20 (20/80 mix)
Fram Ultra filter
Synpower 75W-140/4oz. XL-3
Red Line D4 in the T56

Top