Build date 1/12 2200 miles. I have a tick noise but it's from the rocks I get stuck in my tire when get through wheeling. Enjoy your ride its under warranty.

 

2012. February 2012 build. 8300 miles. Everything is great so far. About 1000 miles of those 8300 were towing at or above the 3500 pound capacity. I changed oil with dyno at 5k. Will switch to synthetic at 10k. I also switched front and rear diffs to synthetic around 3k.

 

Feb 2012 build date, 3k and no ticking.

 

5-12 build date 2500 miles no tick, lovin it.

 

Build Date: 02-15-12 Mileage: 5400 miles....tick on startup since day one really less than 2 secs, changed oil to synthetic at 4k, seems to be running stronger than ever

 

4/12 Build date. 1,600 miles no tick except the 2 second start up oil pressure noise that is normal. In the end we will probably find out that a certain build date of cylinder heads were affected and it may vary greatly for the vehicle build date. Our Grand Cherokee has 31,000 miles and no tick other than the same start up. It is not a design flaw that is going to show up on all 3.6's so don't lose sleep, you have a warranty so enjoy your Jeep. This engine rocks in these Wrangler's !!!

Also don't get paranoid like a lot of people already are. Looking at "tick" video's on youtube and 50% of the people posting on there with the "dreaded 3.6 tick" have nothing more than normal valve train / injector noise. Find the few video's of the actual tick and you will know.

 

build date 8/11.......32,893 miles.....no tick...and i love this motor

 

build date of 12/11 just under 22k miles...no tick other than the usual OHC tick when it sits in cold weather overnight and the oil bleeds down. Ticks for about 10 secs then goes away.

 

2/12 build date JK Rubi MW3 Manual .... 8000 miles on the clock and no issues at all. Love My JEEP!

 

I will be going to a 5w30 synthetic soon though