Problem Description and Possible Solution
Sludge can build up in the engine because Toyota did not recommend frequent enough oil changes. Lexus will sometimes offer a discount on cleaning the engine if necessary. Owners who changed their oil every 3,000 miles did not experience these problems. This sludge build up can lead to excessive oil consumption.
Average mileage: 112,139 (61,559–187,000)
Engines affected: 2.2L 4 Cylinder, 2.4L 4 Cylinder, 3.0L V6
14 model years affected: 1998
, more2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
24 people reported this problem
on a 2000mi trip burned 1 qt. return trip 4 qts sometimes lots of blue smoke when starting last week 700 mi trip 4 qts my rear valve cover leaks with burning smell.problem not yet repaired will change rear valve cover gasket and look for carbon build up like found in front cover even if oil changes were done regularly.
burning and leaking oil started after change to synthetic oil. EGR malfunction light has been on for over 50000 miles runs well but excessive fuel consumption in town, hyway driving is ok