Lexus GS350 increased oil consumption and ongoing maintenance concerns on Lexus GS350

Some Lexus GS350 owners report experiencing significant oil consumption issues, particularly in models from 2006 to 2011. Common causes cited include exceeding oil change intervals of 3,000 miles, clogged PCV valves, worn piston rings, engine overheating, low oil levels, and misfires that can adversely affect engine performance. While regular maintenance is crucial for vehicle health, some owners find that addressing oil consumption may require specific actions, such as replacing piston rings. Chronic low motor oil levels can exacerbate this issue, potentially leading to engine breakdown, overheating, and damage to the oil control rings. Some owners have noted that using thicker weight oil or additives like Lucas oil stabilizer can help mitigate oil consumption in high-mileage vehicles with low tension rings. Additionally, replacing the one-way PCV valve with a new or always-open valve has been suggested as a preventive measure. These insights underscore the importance of targeted maintenance to enhance the longevity and performance of the Lexus GS350.