Uhhhh.... why?Thanks for the good pictures and information! Always wondered how bad carbon deposit was going to be on the valves. Guess i will use the GDI spray before each oil change to help reduce buildup.
This thread has proved that the J35 does NOT have major carbon buildup issues. A lot of forums with these vehicles theorize that the carbon chunks that break off when you use a cleaner causes scoring on the cylinder walls and can lead to oil burning issues.
Based on the evidence presented in this thread I would say most people will never have issues with the carbon buildup during their ownership.