This is why people should NEVER go to a quick lube place.
6 quarts of synthetic of your choice is less than $30 at Walmart. However, as has already been said, your Jeep came with regular oil and there is nothing wrong with continuing to use regular oil in it.
~Lots of modded Jeeps, trucks, and cars~
My favorite quote from the press release.. sad but true: "Chrysler claims its products, especially the Jeeps, can handle all sorts of terrible conditions, churning through muddy swamps, climbing mountains, and crossing rivers. Turns out they cannot even handle a car wash."