Engine Oil Leaking problems of the 2003 Infiniti G35

I own a 6-speed manual transmission and the car is consuming a tremendous amount of engine oil. I am pouring two quarts of oil in it every 3 - 4 days. At this point, the oil is leaking into the combustion chamber producing white fumes out the tailpipe. I reached out to Infiniti?s consumer affairs department with the issue and they advised me to take the car in to an authorized Infiniti service center for evaluation. I then took the car to an Infiniti service center and told the service rep my car complaint. His immediate response was that the manual transmissions do consume a lot of oil. After the car's evaluation, the service rep told me that the entire engine block would need to be replaced because of damaged or worn piston rings. I asked the service rep what could cause a sophisticated, expensive machine to require a motor replacement after only 126k miles. The service rep replied that it could be due to infrequent oil changes and/or driving the car for long periods without oil both of which do not apply to me. I then reached out to the Infiniti consumer affairs department for some resolution to what I would consider a travesty and was told that there was absolutely nothing that they could do to assist me in this matter citing two reasons - (1) not being a loyal customer of Infiniti because my last service visit was in 2009 and (2) the vehicle is way outside the manufacturer's warranty. I then did some research online to see if I was the only person with this car that was experiencing the same problem. I found numerous postings, most of which claim that Nissan is fully aware of the issue, but they are taking no responsibility for the issue.

Today, I found 2003 Infiniti G35 sedan leak oil into spark plug hole. Oil leak into the spark hole would cause engine fire with high voltage from ignition coils. I also found this issue was not limited to my vehicle but most of Infiniti/Nissan vehicles had this problem. I believe Nissan already has known this issue. I hope NHTSA would do something for all of Nissan/Infiniti vehicle owners.