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Grand Cherokee 2014 engine tick

my 2014 developed this ticket about 100,000. It seems to be getting worse.This may be related......at Up to 165 degrees oil temp , pressure at 2000 rpm is about 70 psi, the second it goes to 167 degrees pressure drops to 40 psi. This seems like it has to be a false reading, but need to check with mechanical pressure guage. The low oil pressure issue and engine tick is is apparently a known issue
 
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