if you ever take your Jeep's in for oil changes, beware of a Tire shop in Sanford Florida. They stuck 6 quarts of oil in my truck, and it's a 2.5 liter 4 cylinder! They blew out the front and rear main seals, and now won't replace anything! Beware of this rip off oil change place, and steer clear!
EDIT: PM me for specifics on the shop if you're in the Sanford area!