dirtautoguy
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- Joined
- Jul 22, 2015
- Messages
- 247
- Reaction score
- 138
I recently had my 4l60e transmission rebuilt. I was talking to the mechanic and he said that a extra transmission cooler would be a great addition to my truck. I have the new cooler but I was wondering what size line I should run? 5/16 or 3/8?? also the cooler I have has been used is there a good way to flush it all out?