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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 06-30-2012, 02:26 PM
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Default My engine oil cooler is leaking - correction

The plastic fins on the engine oil cooler has a vertical crack (drivers side) and is oozing oil. What are my options for repair?
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  #2  
Old 06-30-2012, 02:36 PM
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Default Re: My engine oil cooler is leaking - correction

American Racing makes a metal (titanium?) oil cooler for the Chevrolet Corvette LS6 engine that I've seen adapted to the Hummer. Someone did it here on their H2 years ago and was very happy with it. It even comes with adjustable brackets for installation. I've had the hoses to oil coolers fail, but never the unit itself. You could also consider adapting a tranny cooler, because lots of people make aftermarket transmission coolers. I'd buy a new one instead of trying to repair yours.
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Old 06-30-2012, 03:28 PM
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Default Re: My engine oil cooler is leaking - correction

Quote:
Originally Posted by HummerJim
American Racing makes a metal (titanium?) oil cooler for the Chevrolet Corvette LS6 engine that I've seen adapted to the Hummer. Someone did it here on their H2 years ago and was very happy with it. It even comes with adjustable brackets for installation. I've had the hoses to oil coolers fail, but never the unit itself. You could also consider adapting a tranny cooler, because lots of people make aftermarket transmission coolers. I'd buy a new one instead of trying to repair yours.
Thanks Jim, what do you think of adding an after marker trans cooler and using the oem external trans cooler for engine oil?
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Old 06-30-2012, 05:23 PM
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Default Re: My engine oil cooler is leaking - correction

That sounds like an idea, however the LS6 optional engine oil cooler is much larger in area than the Hummer transmission coolers. I also wonder about the difference in pressures on the cooling pipe design. I'm sure someone has tried this before, but I can't find it in the search.
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  #5  
Old 06-30-2012, 07:31 PM
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Default Re: My engine oil cooler is leaking - correction

You need to do the Trans cooler mod as well. I posted links with a lot of info in your other thread.

I haven't seen much info on external oil coolers..

Good luck with it and let us know how it ends up
__________________
_____________________________________

2006 HUMMER H2
MOOG Front End
Diablo InTune w/DiabLew Tune
Cognito Steering Support
OBX LT Headers
Air Raid Filter w/Tube
External Trans Cooler -Radiator Bypass
Corvette Servo
Rancho 9000 Adjustable Shocks-
Rancho Steering Stabilizer
20" Chrome Fuel Hostage - Cooper ST Maxx
Slotted Rotors/Ceramic pads/Steel Lines
Viper Smart Start
iPod/Video Interface
HID Head and Fog Lights
Optima Red Top w/ Priority Start Cut Off Mod
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  #6  
Old 07-01-2012, 02:27 AM
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Default Re: My engine oil cooler is leaking - correction

Quote:
Originally Posted by pdxrealtor
You need to do the Trans cooler mod as well. I posted links with a lot of info in your other thread.

I haven't seen much info on external oil coolers..

Good luck with it and let us know how it ends up
For the sake of time i had the local tire store replace it with a new OEM radiator. Engine oil and Trans oil both look good. The old rad was cracked and leaking from the front of the black plastic tank on the driver side of the rad which i believe houses the fluild to fluid heat exchanger for the engine oil?
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  #7  
Old 07-01-2012, 02:27 AM
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Default Re: My engine oil cooler is leaking - correction

Quote:
Originally Posted by pdxrealtor
You need to do the Trans cooler mod as well. I posted links with a lot of info in your other thread.

I haven't seen much info on external oil coolers..

Good luck with it and let us know how it ends up
For the sake of time i had the local tire store replace it with a new OEM radiator. Engine oil and Trans oil both look good. The old rad was cracked and leaking from the front of the black plastic tank on the driver side of the rad which i believe houses the fluild to fluid heat exchanger for the engine oil?
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  #8  
Old 07-02-2012, 12:11 AM
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Default Re: My engine oil cooler is leaking - correction

I figured youd need a new radiator. How much did that set you back?

You should really consider the external Trans cooler/radiator bypass.

It will prevent catastrophic failure to your Trans and cooling system and your tranny will run much cooler, a very good thing.

I just got back from camping. We pulled a trailer up the same mountain I snowboard at all winter. In air temps 30-40* warmer and WITH the trailer I was towing the tranny never got above 150*.

In Winter time towing nothing I'd hit 200* degrees easily...... That's huge temp reduction which is very beneficial to our trannys.
__________________
_____________________________________

2006 HUMMER H2
MOOG Front End
Diablo InTune w/DiabLew Tune
Cognito Steering Support
OBX LT Headers
Air Raid Filter w/Tube
External Trans Cooler -Radiator Bypass
Corvette Servo
Rancho 9000 Adjustable Shocks-
Rancho Steering Stabilizer
20" Chrome Fuel Hostage - Cooper ST Maxx
Slotted Rotors/Ceramic pads/Steel Lines
Viper Smart Start
iPod/Video Interface
HID Head and Fog Lights
Optima Red Top w/ Priority Start Cut Off Mod
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