Chrysler Group will extend the warranty for consumers who bought certain 2011-13 vehicles with 3.6-liter V-6 Pentastar engines.
If you remember, Rick, there was a post about left hand cylinder head cracking in 2011 3.5 V6 engines. Chrysler will cover under warranty.
John you have a good memory and I remembered it too but did not find it at the time. The problem is that trog623 has a 4.0 engine not the 3.6-liter V-6 Pentastar engine. Do you remember any issues with a Nitro cylinder head? I did do some research "On-line" and remember a Nitro owner having heads replaced but it did not correct his issue.
Nitro Year: 2007 (1 of 91,815 sold in 07)
Nitro Model: R/T 4X4 Stone White
CAT-BACK Exhaust, CAI, Projector Head Lamps
Fully-Equipped w/all factory options