Anybody noticed for 2006 the 4.0L V6 went from 245hp to 236hp and the 2.7L 4 cyl went from 164hp to 159hp.I am not sure why.May be now they recommend regular gas instead of premium although the 4 cyl has always been listed for regular i think.
There might be something else.
Anybody know?

this has already been discussed...

Yep recently in fact. Just do a search. Thanks for trying to inform us though... :-)