2001 SUBARU OUTBACK User Comment / Complaint

2001 subaru outback at 90k after 2.5 engine is started it rattles like the valve lifters are not getting oil lubrication. it last for about 10 minutes or until the engine temp gauge is in the normal range. it does this when the engine has been sitting more that 8 hours without starting. changing of oil in crankcase, did not change the rattling sound. upon taking the vehicle to the subaru dealer, the service manager informed me this was a normal character feature of 2001 and newer subaru's that had the 2.5 engine and was caused by piston slap in the engine. the correct the noise the owner would have to have the engine rebuilt to stop the piston slap.