Quote:
Originally Posted by juanbenae
I have a 15 JK and having done a ton of research our motors are very prone to overheating. They run hot by design for emissions and Crysler screwed up big using less than worthy valvetrain materials. Not to mention a plastic oil cooler, horrible thermostats, water pumps and a factory fan that does not kick on until 226*. The other thing is the oil filter housing at the top of the motor does not have a check valve so after an hour or so all the oil drains back into the pan so every start is a dry start for the valve train. another issue with the early 3.6's was that the block sand casting leavins were not removed effectively. do a search for "sand in my cooling system overflow".
I've put in a Baxter filter adapter that has a check valve and holds a 1/3 of a qt or so to cover that 3-4 seconds the oil pump needs to push fluid when starting. Did my second oil change after 3500 miles that are mostly trails and rocks and waiting on Blackstone data. I watch mine closely all the time.
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I ran across a YouTube video a few weeks ago featuring the Baxter filter adapter and was intrigued with the concept but somewhat put off by the price not understanding how critical the problem of 3-4 seconds of no oil at startup is.