Having issue with my 09 SF 3.3L FWD using oil, 1L in less than 500km. No leaks, no smoke or obvious signs of burning. Shop can't figure out what's wrong. Shop did an oil change, surprised to find it took 6L of oil to reach full mark on dipstick - manual specifies on 5.2L Any ideas what could be going on? Could the dipstick be incorrect, or an aberrant oil pan? Some crazy unique engine? Only owned the vehicle for one year, 116,000km on it right now. Mostly in town driving, longer (over 100km) highway trips once a month of so.