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Jeep Wrangler JK
JK General Discussion
Radiator petcock won't drain
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<blockquote data-quote="JimNH" data-source="post: 425814" data-attributes="member: 18470"><p>Update - there is conflicting info on the interwebs about the petcock. Some videos and sites say turn 90 and some say 180. you have to turn 180 to get it to open. the first 90 is easy and then there is some kind of stop, then you have to try harder to go another 90 (counterclockwise) to open. why not just a 1/4 turn ball valve? </p><p></p><p>I have now completed 3 cycles of filling and draining with DI water. the fluid coming out is orange - so I am guessing HOAT which is good - but it could also mean Dexcool. So even though the coolant looked pretty good, I plan to keep going until I get mostly clear water out before refilling with G-05 Zerex. In the end, I probably did not need to do this at all.</p></blockquote><p></p>
[QUOTE="JimNH, post: 425814, member: 18470"] Update - there is conflicting info on the interwebs about the petcock. Some videos and sites say turn 90 and some say 180. you have to turn 180 to get it to open. the first 90 is easy and then there is some kind of stop, then you have to try harder to go another 90 (counterclockwise) to open. why not just a 1/4 turn ball valve? I have now completed 3 cycles of filling and draining with DI water. the fluid coming out is orange - so I am guessing HOAT which is good - but it could also mean Dexcool. So even though the coolant looked pretty good, I plan to keep going until I get mostly clear water out before refilling with G-05 Zerex. In the end, I probably did not need to do this at all. [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
Radiator petcock won't drain
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