My 2013 LS (100% stock with 4k miles) just developed an engine "knock". You only hear it after it gets to full temperature and it sounds like a lifter only sporadic in that it comes and goes, not consistent like a lifter would be. Ford had it for a week and together with FRPP can't figure it out, told me to drive another 500 miles and return it for another check.
They had just serviced it and changed the oil, so they want to see the oil after 500 miles. It didn't do it before the service, so did some tech just drive the sh** out of it when it was at the dealer and bend something, or you guys have any idea? I hate to think I'll get a new engine because they cant figure it out. Its never been raced or even dynod, red key never activated.