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EOC plumbing for DeWitts Rad

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Old Mar 16, 2018 | 02:44 PM
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Default EOC plumbing for DeWitts Rad

Has anyone installed the DeWitts rad Model: 1139105B in an A6? This one has TOC and EOC. I can see that there is a oil cooler line assembly from RockAuto, ACDELCO 15848590, but that appears to be for an external oil cooler. Does that one hook up without mods to the EOC on the DeWitts rad, or is something else required?
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Old Mar 17, 2018 | 07:55 AM
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Yes. Chuck Mosello of Corvettes of Westchester recommended that particular radiator model when we replaced the OEM a couple of years ago. He ran the EOC port of that radiator to an external oil cooler not unlike the Z51. If you want the details, contact him at CoW in Ossining NY.
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Old Mar 17, 2018 | 01:19 PM
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Yes, we installed the dual electric fan model with TOC and EOC in my 11 GS. I got all my OEM parts through a local Chevy dealer - Parts guy is in our Vette group. Made a huge difference in AZ Summer heat.
I did not keep the parts list, sorry.
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Old Mar 17, 2018 | 02:16 PM
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Default Yes, and remember.....

Originally Posted by Eritosthenes
Yes. Chuck Mosello of Corvettes of Westchester recommended that particular radiator model when we replaced the OEM a couple of years ago. He ran the EOC port of that radiator to an external oil cooler not unlike the Z51. If you want the details, contact him at CoW in Ossining NY.
Yes, and remember..... Not only did we use the RAD OIL COOLER, but I also installed a Lingenfelter external oil cooler

in the front of the car. I had to modify the brackets and plumbing, but I'm sure that the benefits sure outweigh the costs.

Chuck CoW
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Old Mar 17, 2018 | 03:01 PM
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Yep, did that on my '12 GS, since this is '07 technology, had to order the oil cooler lines.
I may have to install an external cooler too, the heat exchanger works in the DeWitts but I've found it needs some assistance when on the race track.
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