AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand - View Single Post - Cannot remove 4.0 ltr engine block drain plug. What is the next best alternative?
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Old 09-02-2019
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Quote:
Originally Posted by Eruntalon View Post
Are you suggesting trying to release coolant in the engine block via the temp sensor port?
If there's a plug I'd try it. It's possible they stopped machining the hole so there may not be a plug there at all.
I first removed the drain plug on mine when I changed coolant type to Zerex G-05 as used in later TJs, as I figured it was the simplest way to get rid of all the old coolant.