Re: How many have switched to a full synthetic oil?
I switched at 30k miles. I am the second owner of an otherwise factory maintained 2011 LTD, 5.7. I switched it to Castrol Edge 5w20 full synthetic. I usually use Mobil 1, but the Castrol had Chrysler's approval for use on their products.
I never had the "Hemi tick". I am still planning on changing the oil when the EVIC message displays or every 5k miles, which ever comes first. The oil and filter are still cheaper than a new Hemi!
2011 Jeep GC limited, 5.7 Hemi 2wd, Silver-black leather
2007 BMW X3 so, 3.0 dual vanos, 4wd, Silver-black leather
1986 Chevy Monte SS, 5.0 L69, 5 speed, Black-burgundy
1978 Chevy Corvette Indy Pace Car edition, 5.7 L82, 4speed