Chrysler reports that 2007-08 3.8-liter Jeep Wranglers built prior to Sept. 19, 2007, may produce a small oil leak that is difficult to trace.
According to the carmaker, the seepage may appear to come from the timing cover gasket, the oil filter or filter adapter, the oil pan or gasket, the rear main seal carrier or the front crankshaft seal. In reality, the leakage source is microscopic holes in the aluminum timing cover.
Installing a redesigned cover and gasket, Part No. 68003438AA, should put an end to the leakage issue.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].