Quote:
Originally Posted by Army
Do you do that in-situ? Do you cut and then kind of un-roll the union from the threaded portion - a bit like breaking open a fortune cookie?
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Exactly like a fortune cookie.
I also cut off the top line first and use my fluid extractor to suck as much oil out of the cooler as I can before cutting the lower line off.
You can cut the fittings while the cooler is in the car, but it's easier to cut the lines and remove the cooler to deal with the fittings IMO. Then you can be comfortable and see everything clearly as you cut the fittings and avoid cutting so deep that you damage the threads or worse.
This also gives you the chance to completely drain the cooler. After doing this the last time, the oil stayed golden for several days before it turned black again.