All the comments about Lexus
All the comments about Lexus remedying the carbon build up is BS. I've had a 2009 motor rebuild and subsequently two dealer carbon flush. They have since kicked me to the curb. Telling me the issue can be prevented by using Chevron techtron 91. I even added a sea foam additive with every fill up. 3,000 miles later the car returns to its failed state. The motors from 2006 to early 2011 are losers and Lexus will hang you out to dry!