Quick feed back on the Lexus GS 350 car. Any used car can have its issues pending on how the previous owner took care of it. The GS300-350 are known for burning oil specifically this generation year. A quick remedy that may help you is first change the PCV valve, I forgot to mention it on this video, check your spark plugs and coil packs, add Marvel mystery oil towards your next oil change and drive the car for about 500 miles. The marvel mystery oil will help clean up your carbon build up which could also be a culprit of your car burning oil. For any questions please comment below and I will do my best to answer your questions.