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03-13-2009, 10:39 PM
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Hummer Guru
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Join Date: Apr 2007
Location: Florida
Posts: 2,871
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Tranny Flush
Is the Dextron III the only recommended trans fluid to replace the stock fluid? I have reached 33K and need to flush the old fluid.. Thanks in advance....Jamie
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03-14-2009, 01:37 AM
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Hummer Expert
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Join Date: May 2007
Location: PHOENIX AZ
Posts: 681
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Re: Tranny Flush
You could use syn ,mobil 1,or Redline,or Amsoil.
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you have.
-- Thomas Jefferson
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03-14-2009, 02:32 AM
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Hummer Guru
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Join Date: Apr 2007
Location: Florida
Posts: 2,871
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Re: Tranny Flush
Quote:
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Originally Posted by IRA51
You could use syn ,mobil 1,or Redline,or Amsoil.
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Thought there was an issue that only Dex III was suitable? |
03-14-2009, 02:35 AM
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Hummer Expert
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Join Date: Jun 2008
Location: New York
Posts: 524
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Re: Tranny Flush
I think they recommend changing the fluid at 50K in the H2 owners manual, but it's cheap insurance to change it earlier and I've done some serious towing! I had my '06 done at 38k at an AAMCO dealer in one hour for 220. They told me the flush is a dealer tip off and doesn't do anything - to just change the fluid.
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Hummer, like nothing else
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03-14-2009, 02:39 AM
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Hummer Expert
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Join Date: Oct 2005
Location: MARYLAND
Posts: 779
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Re: Tranny Flush
Isnt there a difference in dropping the pan and flushing while changing the filter? arent you suppose to do all three things? i used royal purple in my truck and if you really want insurance you need to do the "tranny cooler bypass" search it
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03-14-2009, 03:07 AM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Tranny Flush
GM discontinued the use of the Dex-III branding and recommends Dex-VI (6) as a replacement. The only full synthetic that meets this requirement is Redline and GM fluid. However, it was quite a while ago when I researched the companies and their Dex-VI specs so others may be on board now and have it too.
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H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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03-14-2009, 06:03 PM
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Hummer Professional
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Join Date: Oct 2007
Posts: 267
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Re: Tranny Flush
It is my belief that Maintenance Schedule provided by GM is just that a recommendation under normal use. I have been wheeling in deep sand and have brought my Transmission temperature to above 200 degrees. My experience tells me the trans fluid breaks down above 170 degrees so I would change it. The only reason It went up is because I didnt air down like I should have. I have always used the dealer just because I want GM coverage.
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2003 H2 SUV Supercharged SHOW TRUCK
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03-14-2009, 07:31 PM
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Hummer Veteran
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Join Date: Feb 2009
Posts: 194
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Re: Tranny Flush
Quote:
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Originally Posted by tomp
GM discontinued the use of the Dex-III branding and recommends Dex-VI (6) as a replacement. The only full synthetic that meets this requirement is Redline and GM fluid. However, it was quite a while ago when I researched the companies and their Dex-VI specs so others may be on board now and have it too.
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Valvoline is marketing a full syenthetic DEXVI that has the GM approved license markings on the container as well. |
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